Opening lock for plastic windows. Door opening limiter - how to choose the best option and install it correctly

Window sash opening limiter (aka “comb”, aka “crocodile”) is a window ventilator. It consists of two parts - a comb (a small bar with indentations) and a retainer. The clamp is attached to the movable window sash, and the comb itself is fixed to the frame. note that window comb It simply fixes, but does not lock, the window.

Combs are used for controlled ventilation of rooms on rotary PVC or wooden windows. They provide the ability to fix the sash in 2 planes: vertical and horizontal.

Plastic comb (installation under the handle)

Available options:

Plastic comb with 4 positions. Length - 10 cm.

Plastic comb with 5 positions. Length - 12.5 cm.

The window opening limiter is supplied with a painted fastener installed under the handle of the plastic window.

Materials from which the comb is made plastic windows:
- metal part under the handle made of painted galvanized metal,
- body - made of high-strength ABS plastic.

Operating principle of the comb

The comb window limiter is the most economical option sash opening restrictions.

The principle of operation is very simple: depending on what influx fresh air If you want to ensure that the size of the gap between the sash and the frame is selected, a strip with slots is placed on the protruding pin of the retainer.

The window comb can be installed on any plastic windows from any profile. And not just for windows! The comb can also be placed on the balcony door.

Why do you need a comb window stop?

A window sash limiter in the form of a comb (crocodile) is needed to limit the opening of the window sash. A window equipped with a comb can be easily locked in the open or ajar position. Fresh air will enter the room through the gap formed between the frame and the window sash. In this case, the comb will ensure rigid fixation of the sash in the position you need. This allows you to avoid strong drafts when ventilating the room, which is especially important in winter.

In addition, if you have pets like a cat who love to sit on the windowsills and look outside, then you simply need such a limiter. Through the narrow gap left by the limiter, your beloved animal will not be able to climb onto the ledge and leave you.

The comb sash opening limiters allow you to leave the fixed window sash unattended, without fear that a gust of wind will swing the window open.

Advantages of a comb

low price
ease of installation - installation does not require special skills
installation “under the handle” allows you to install the “comb” limiter on both plastic and wooden windows
opportunity to pick up suitable color- white or brown - depending on the color of your windows.

How to install the comb

To install a comb on a window, you must have on hand: at least one comb, 2 self-tapping screws, and a screwdriver.

If you forgot your screwdriver in the garage, you can use a regular screwdriver, as shown in our series of photos.

To install the comb on the window, you must first remove the handle from the window sash. To do this, turn the cover and unscrew the handle screws. One screw on top and one screw on bottom.

Then install the mating part of the comb with the rod on the handle.

Put the handle back in place.

Place the comb itself on the box opposite the mating part, located on the window sash under the handle, and mark the location of the screw with an orange felt-tip pen.

Secure the comb using two self-tapping screws and a screwdriver. Since the combs can be installed on plastic, wood or aluminum windows, you need to purchase screws yourself, based on the window material; they are not included with the combs.

As you can see, installing a comb on a plastic window is an easy process and takes very little time.

Plastic double-glazed windows operate in two modes: slot micro-ventilation and full opening of the sash. However, such provisions are often insufficient. Practical and affordable solution problems – window opening limiter. The device holds the sash at a given level, preventing it from slamming shut or swinging open in the event of a draft. Let's figure out what types of window latches exist and how they work. Let us outline the selection rules and technology for installing the limiter.

A window restrictor controls the flow of air into the room and holds the sash in the selected position. The bar sets a fixed opening gap in the range of 1-10 cm.

Sash blocker

Tasks of the window sash stop:

Air supply adjustment. The required ventilation intensity is set in the room - the air flow circulates in a certain volume through a fixed slot.
Safety. The bar blocks the position of the window - it will not allow it to open wider than the specified level. This is very important for families with small children and pets.
Preventing drafts. The mechanism keeps the sash from suddenly swinging open. Thanks to this, the likelihood of unexpected drafts is reduced. In addition, there is no risk that nearby objects, flowerpots and expensive double-glazed windows will be damaged by abruptly opening the window.

For your information. Poor ventilation premises are one of the main reasons, and in the rooms.

Components of the limiter

A typical blocker is called a “comb” or “crocodile” due to the appearance of the device. The latch has a simple design and operation scheme.

The most simple model The window stop consists of two parts:

Comb. An extended bar with grooves and a hinged connection for raising/lowering the mechanism. The number of “notches” on the plate determines the opening range of the window. The most popular are four-position models.
Latch. The response part is located on the movable sash. A small metal pin holds the comb in position.

Window stop device

The use of a limiter involves selecting the window opening level and placing a pin between different positions of the comb.

Pros and cons of using a blocker

The main advantages of limiters for plastic windows are ease of use and the safety of operation of the sashes. Additional advantages include:

affordable price;
Possibility of application on previously installed windows;
ease of installation - all work can be done by yourself without the involvement of specialists or the use of expensive equipment;
simple care of the mechanism and the ability to self-replacement in case of breakdown.

Locker on the window frame

However, this method of fixing a window sash also has disadvantages:

non-compliance with installation technology is fraught with damage to the frame and deterioration of tightness parameters;
fragility of the structure - active, careless operation can damage the latch or lead to the strip breaking;
in the cold season, the use of a limiter is not relevant - the air inside the room quickly cools. One way to ensure ventilation in winter is to install.

A simple comb is not enough to fully protect children. To ensure complete security, lock models must be installed.

Types of window sash clamps

Window stops for PVC windows differ in the material of manufacture, installation location and mechanism of action. The listed parameters determine the strength of the bollard, its durability and reliability in terms of security.

According to the material of manufacture

For installation on PVC windows, three types of models are used:

plastic;
metal;
combined.

Plastic. An affordable device that is perfectly compatible with PVC profiles. Restrictors are available in several colors, standard quantity positions – 3-4 positions.

Plastic limiter

Disadvantages of PVC blockers: low strength, short term services. It is not advisable to install such modifications on sashes facing the windy side - heavy loads can cause deformation of the plastic.

Metal. More durable and therefore wear-resistant blockers. The most preferred are brass stops with an anti-corrosion zinc layer. The color range of metal retainers is limited: golden, silver, grayish and copper shades. The downside is the high cost.

Metal limiter

Metal-plastic. Combination devices include: plastic comb and metal retainer. As a rule, the bar white. Interesting multi-colored options - to order.

Combined type of blocker

By mounting method

There are 2 installation methods:

installation under the handle;
installation in the overlap of the sash.

The first option is conventional combs mounted on a fixed part of the frame. The bar rises or falls without taking up extra space or clinging to the curtains.

Placement of the limiter under the handle

The second option involves installation at the end of the sash. The pin is fixed with long self-tapping screws that pass through both sash overlap bridges. This type of fastening is more reliable.

The window sash opening limiter is suitable only for plastic structures. Installation on wooden frame can lead to its deformation along the fibers natural material due to significant forces occurring on the pin.

Blocker at the end of the sash

By mechanism of action

Limiters for opening plastic windows design features and operating principle can be classified into the following groups:

External comb. A primitive “crocodile” for flaps. The model fixes the window for ventilation, but the degree of protection for children is insufficient.
Built-in limiter. An analogue of the external comb, the functionality corresponds to the previous device. Plus - aesthetics, hidden placement. The downside is that it does not provide security.
Constant brake. Blocks spontaneous opening and excessive swinging of the sash. A similar mechanism is used on the doors of offices and shops. Disadvantages: high cost, risk of breakage if the window is opened suddenly.
Handle-lock. Effective protection against children's access to windows. Externally, it is an ordinary handle, but shut-off valves are built inside. The downside is the limited choice of sash position and the need to keep the key safe.
Window limiter with cable. The capabilities are similar to a comb, but can withstand a tensile force of up to 550 kg. Installation on swing sashes is permissible anywhere; on tilt-and-turn frames – at the top of the structure.

Cable window rotation limiter

How to choose a window comb

Before purchasing a window stop, study the characteristics of different modifications. When choosing, experts recommend adhering to the following rules:

On balcony blocks It is better to install activated brake mechanisms.
For attic double-glazed windows and large windows, it is necessary to select metal fasteners of increased strength.
For active use and frequent opening/closing of the sashes, it is advisable to choose a window limiter with a cable. Alternative option– blocker with a locking mechanism.
If there are often drafts in the apartment or the windows are located on opposite sides, give up plastic products.
To protect children as much as possible, it is necessary to install special restrictions for safe ventilation or.

Child lock on the sash

How to install a limiter on a window

The technology for installing a comb-type window retainer can be divided into three stages. First - preparatory activities. The second and third are the installation of the clamp and the bar with grooves, respectively. Let's look at each of them.

Preparing tools

Prepare your tools in advance. Having everything you need nearby will help you stay focused on your work.

Required tools and materials:

limiter with pin;
screwdriver or Phillips screwdriver for fixing elements;
self-tapping screws up to 10-12 mm long – larger fasteners can damage the window profile;
construction or household knife– necessary for prying off the plug;
pencil for marking - it is better not to use a marker on white plastic so that there are no marks left;
drill and drill bits.

You should have a tape measure and instructions on hand, supplied complete with the limiter for PVC windows.

Required Tools

Installing the retainer

The primary task is to install the pin on the opening window sash.

Sequencing:

Pry off the plug on the handle and turn it 90° - access to the fasteners will open.
Fix the window in open mode and remember the position of the handle - perpendicular to the vertical of the sash.
Unscrew the upper and lower bolts and remove the handle.
Place the comb bracket so that the board is under the window handle. The pin should point towards the return door.
As a rule, the holes in the bracket coincide with the holes where the screws are located.
Attach the bar with the pin, reinstall the handle and tighten the bolts.
Return the handle plug to its original position.

Installation of the window stopper

Bracket Attachment

This is the most critical stage of installing a limiter on a window. Here it is important not to make a mistake with marking and preparing the holes for mounting the comb - it will not be easy to correct the defect. Illiterate actions can lead to depressurization of the glass unit.

Work technology:

Close the sash with the lock and mark the level of the bracket. The pin should be located opposite the comb, but not interfere with the free opening/closing of the window.
Mark the planned location with a pencil.
Holding the toothed strip in the designated area, try to fix the window and check the operation of the sash.
If the elements are well joined, the limiter does not interfere with the use of the double-glazed window, then you can finally screw the bracket to the frame with self-tapping screws.

Checking the operation of the sash opening blocker

It is not advisable to “set” the guide on glue. Constant loads will quickly damage the strength of the coupling and the bar will fall off.

The entire process is clearly demonstrated in step-by-step video instructions:

Features of replacing an old element

Before installing a new limiter on plastic windows, you should consider several important points:

We need to find an analogue of the old comb. When purchasing, pay attention to the basic dimensions: the diameter of the pin and the distance between the mounting holes.
Even if only one element fails, the entire system must be replaced. Fasteners different models may have dimensions that will not fit the new grooves of the strip.
To change the brackets you need to unscrew two screws.

Replacing the sash opening limiter

When rearranging the bar, a number of rules are followed:

Remains of plastic on the screws must be removed - if this is not done, there is a risk of breaking the thread during tightening;
it is advisable to get into the old, used thread - first turn the self-tapping screw counterclockwise, and as soon as the fastener “falls off”, change the force vector.

If the holes of the new comb do not correspond to the old ones by 1.5-3 mm, they can be bored out with a file, and the bar itself can be secured with self-tapping screws with wide heads and press washers.

Making a limiter with your own hands

For windows country house can be built homemade device to regulate ventilation. You will need some simple materials:

a piece of wire with a diameter of 2-3 mm;
2 small nails - will act as a pin;
2 large nails - for making staples and then fixing the limiting device on them.

Making a window blocker

Assembly algorithm:

Bend the wire in half, forming a loop in the middle and small curls along the edges.
Make an arch using long nails. Use pliers to give them the desired shape.
Drive staples from long nails into the fixed frame of the sash at a height convenient for adjustment.
Thread one end of the wire into the bracket.
Attach a small nail - a tripod - to the movable door.
To adjust and fix the position, the wire ring must be put on the clamp.

If the invention provides several turns of wire, this will expand the number of window opening modes.

A homemade device does not require financial investments, but in terms of strength it is noticeably inferior to purchased analogues.

Popular manufacturers of window clamps

The quality of the limiters is largely determined by the manufacturer. The following brands have earned a positive reputation among users:

Penkid. A Turkish company specializing in the production of steel window opening limiters with a cable. Metal models can withstand a load of 550 kg, the length of the cable is 200 mm. The blocker cannot be broken or cut with a knife.
Roto. German quality - the manufacturer provides a ten-year guarantee on some window fasteners. Metal models are reinforced with multi-layer anti-corrosion protection, plastic ones are made of safe polymers.
Rehau. Window fittings from a German brand are characterized by reliability and long service life.
Vorne. Turkish products – balance good quality and affordable cost. Buyers praise the limiters for their durability. One of the disadvantages is the tendency of plastic blockers to lose their original whiteness over time.
"Bertha". Offer domestic manufacturer. Budget series products with good performance characteristics.
Ikea. Window systems safety for children. Products of the “Patrol” series are equipped with double latches, required quantity self-tapping screws Important advantage models - versatility. The clamps are suitable for plastic and wooden structures. The limiter can be installed on sliding sashes.

Ikea window blocker

Palladium sells decent products. A domestic company is engaged in the development and implementation window fittings. Metal stops have high level protection from thieves. Cable locks come complete with a key - a child lock.

Limiters are not needed special care. Periodically it is necessary to tighten the fasteners and check the reliability and integrity of the comb. If necessary, you can replace the window retainer.

It is not advisable to use the comb in frosty weather; during heavy gusts of wind or heavy rain, you must close the windows in a timely manner and do not load the blocker. This is explained by significant pressure on the sash and the latch itself, which cannot always withstand it.

Using a Window Stopper

Read about other methods of micro-ventilation in ours.

Additional installation video tutorials

Installation procedure for three types of combs:

Installation instructions for the Penkid child lock. This universal device also used to protect window and door designs from hacking:

Installation of the GIESSE FRIZ aluminum clamp:

Window opening blocking – convenient and practical solutions when ventilating the room. Some models perform an additional task - they prevent children from opening the doors. Installing a limiter on plastic windows does not present any difficulties. The entire process takes about one to two hours and does not require expensive construction tools.

Hide

Indoors, windows are sources of fresh air, which is so necessary in places where people are constantly present. Nowadays, most people have installed plastic windows for themselves, appreciating their advantages. However, their sealing leads to the need for constant ventilation. To avoid keeping windows wide open, use window stops.

What is a window restrictor?

A window stop is a part that allows you to control the amount of window opening and fix its specific position. This method ventilation is very popular due to its ease of use and low price.

The window opening limiter is a special small strip with wavy holes cut out that provides a gap between the frame and the window sash, thereby preventing slight open window open completely or, conversely, slam shut due to strong gusts of wind. This mechanism consists of two elements: the window clamp itself and a strip with holes. The distance that can be obtained thanks to this mechanism is usually 1-10 cm.

The window stop consists of two elements: the clamp itself and a strip with holes

Classification and types of window opening limiters

Window limiters are distinguished by:

Material:
- plastic,
- metal,
- plastic-metal.
Purpose:
- normal ventilation
- safe.
Appearance:
- Euro,
- domestic.

Of course, window combs made of plastic are much cheaper, and such material is not subject to corrosion, however, it is better to choose a metal one, the body of which is made of an alloy; it will last much longer.

Metal window opening limiter

Why do you need a limiter and features of its operation?

This device is designed to limit the opening of a window. Windows equipped with such a device are easily fixed in a slightly open position, due to which fresh air continuously flows in through the resulting distance between the frame and the sash. At the same time, the window comb establishes a strong fixation in the desired position, thereby avoiding strong drafts.

Pros and cons of window opening limiters

The undoubted advantages include:

Ventilation of the premises is safe for children.
The ability to install a window opening limiter on almost any window, be it or.
Simplicity of installation technology.
Low price.
Ventilate the room in cold weather without the possibility of hypothermia.
Reliable fixation.
Any contamination that appears during operation can be easily removed.

Despite all the presence of such captivating facts, these window limiters also have their drawbacks:

At sub-zero temperatures cannot be left overnight.
The need to drill additional holes.
The noise-proof properties of windows disappear.

Self-installation of the limiter

How to put a limiter on? Process correct installation of this device somewhat more complicated than it seems at first glance. To prevent mistakes, it is necessary to take into account all the small details of the installation, and all the actions described below must be performed carefully and carefully, because it will be impossible to correct errors.

Materials and tools that will be needed during the installation process:

the limiter itself;
retainer;
pencil;
screwdriver (you can use a regular screwdriver);
self-tapping screws up to 12 mm in size;
drill;
drill with a diameter of 2 mm;

Instructions:

It is worth noting that for the long-term service of window fittings, it is necessary to carry out all of the above operations to install the limiter on plastic windows without unnecessary stress and effort.

The time spent on installation is no more than 15 minutes. The price of a window limiter usually varies from 30 to 300 rubles. This price range depends on the material, model and, of course, the manufacturer.

To prevent the door from slamming or opening/closing spontaneously, so that it can be fixed at any angle, there is a door opening limiter. There are many types of limiters. They differ from each other structurally, in location, in design. You can choose an element that will match the rest of the door fittings.

Varieties

1. The simplest floor door stop is a wedge with a non-slip base. Designed to limit the door so that it does not open wider than necessary.

2. Another floor stopper is placed on the door at the bottom. It is equipped with non-slip feet that rest on the floor. When opened, the door is released from the groove and set in motion.

3. Magnetic door stop. It consists of a clamp with a magnet located on the floor and a counter plate on the canvas. When opened, the parts connect and hold the door in a certain position.

4. Wall-mounted door stop (swing stop) - an element that is installed on screws in the place on the wall where the door should stop swinging. When opened, the door rests against it and does not hit the wall. This door opening limiter can be conventional or magnetic.

5. A clamp that is attached to the platband at the top of the box. When turning down at a right angle, an obstacle is installed to prevent the door from slamming. To avoid damaging the canvas, wall stops are equipped with rubber gaskets or made of soft materials.

6. C-shaped plastic retainer is put on the end of the canvas and thereby prevents the door from slamming.

7. Opening angle limiter. Metal device, which is installed on the door. The brake pad is equipped with a pedal. The pedal is pressed to fix the blade. To set it in motion, the block is raised using a lever.

8. Latch limiters. Inside apartments they are most often used in bathrooms and kitchens. Usually this is a tongue, which, when fixed, fits into the corresponding groove of the strike plate. There are also magnetic varieties.

Video “Installing a door stop”:

9. Fasteners front door. When installing the door with outside cannot be opened with a key. Magnetic latches prevent the door from slamming shut when you enter the stairwell.

The choice of door opening limiter is determined by the intended purpose, ease of use, design and features of the room (for example, if the apartment has a heated floor or expensive flooring, prefer wall clamps).

Window opening limiter (comb) for plastic, wooden, aluminum windows. Installation and Retail Sales.

A window opening limiter (comb) is now almost a mandatory attribute.
The limiters described below can be installed on plastic and wooden windows, sometimes also on aluminum ones.

Types of window opening limiters.

Window opening limiters on the market can be classified as follows:
According to the material of manufacture- plastic and metal.
By appearance- Euro-combs and USSR-combs.
By purpose- for normal ventilation and for safe ventilation (such limiters are effective protection children).
On this page of the site we will talk about metal window opening limiters; if you are also interested in plastic limiters, go to the comb page for plastic windows.

Window opening limiters for normal ventilation:

Window opening limiters for safe ventilation:

Combs designed for installation on aluminum windows.
7. Plastic comb, for aluminum windows (link to another page).

Price .

Window opening limiter for normal ventilation.

Euro-metal combs (imported).

This window opening limiter has a very useful feature - it can be shifted/rotated by a small angle to the right/left. This allows you to mount the limiter at some distance from the sash, which can be useful later when adjusting the sash. The pin has a rubber cambric, so the opening limiter fits tightly onto it, without play, which means there will be no metallic rattling during wind gusts. The pin is fastened with self-tapping screws into the flap of the sash, and not under the handle. The pin is securely fastened. But since to attach the pin you need to “damage” the sash with two holes, we will call such a fastening vandal.

Let's repeat. The pin is fastened with self-tapping screws into the sash overlap, and not under the handle, so such a stop should not be installed on wooden windows, since the wood may not withstand strong wind loads and will crack in the direction of the grain (the overlap only seems strong, it has a groove for the seal).

Metal and plastic Euro combs are not interchangeable:
1. The mounting area for the comb (the one where there are holes for self-tapping screws) is wider than the plastic one, 15mm instead of 12mm, so it may not fit between the sashes.
2. The holes for the fastening screws of this opening limiter and the plastic ones do not match.

Ideal for plastic windows in rooms with a large number of honest users, otherwise, after some time, the limiter may not be in place.

The cost of the comb without installation (from 1 piece) is 450 rubles
The cost of the comb with installation is 550 rubles

Euro-metal combs (Russian production).

The material used to make the window opening limiter is a metal alloy containing zinc, aluminum and copper. The most widely used casting zinc alloys are in the automotive industry for casting carburetor bodies, pumps, speedometer frames, radiator grilles, hydraulic brake parts, and various decorative parts.

The appearance is the same as that of plastic Euro-combs, but one more position (5 fixations, not 4). Color - the comb itself and the base pin are white, brown. They do not have the ability to shift/rotate right/left. The limiter is placed on the pin without a tight fixation, but it can be ensured by wrapping tape.

Flaws: not only does it not have the ability to shift to the right/left, but it also does not bend, so putting it on the pin (in the case of a rotary rather than a folding opening) requires the application of significant force, which will most likely lead to the pin becoming loose (this is on plastic windows). And on wooden windows, over time, cracks may also appear at the place where the comb itself is attached. To avoid this, you must not tighten the screws securing the opening limiter all the way and it will dangle on its own. But this can hardly be considered convenient use, because... With gusts of wind, rattling is possible.

Where should these opening limiters be used:
1. The use of this comb is justified on windows large sizes, which are used primarily in the folding position in drafty rooms to prevent slamming.
2. Suitable for any window to which the geometry fits (subject to our installation).

The cost of the comb without installation (white) (from 1 piece) is 200 rubles.
The cost of the comb without installation (box) (from 1 piece) is 230 rubles.
Cost with installation (white) (without rattling and maintaining the shift to the right/left) - 350 rubles
Cost with installation (box) (without rattling and maintaining the shift to the right/left) - 380 rubles
The minimum order cost (with installation) is 2000 rubles.

USSR-combs. Metal (Russian production).

The window opening limiter is made of steel, powder coated. The limiter has five fixations. The width of the fixation slot is 5.7 mm. Color - white, base pin - white. They have the ability to rotate/shift right/left. The kit may come with or without a base pin (in this case, any self-tapping screw can serve as a pin).

Flaws:
1. The first slot is significantly removed (it is located approximately at the level of the second slot of the plastic Euro-comb), so micro-ventilation is impossible. For the tilting position, only the first two slots are available, with the second one securing the maximum tilt. Moreover, since the amount of tilting depends on the height and width of the sash, it may happen that only the first slot will be available to fix the sash in the tilted position.
2. The window opening limiter is elongated, therefore, if the window sill is narrow and the handle is located at head level, you can get injured when fixing the small opening.

Where should these opening limiters be used:
On windows that predominantly open in a rotary mode and when a maximum opening angle is required.

The cost of the comb without installation without a pin (white) (from 1 piece) is 80 rubles.
The cost of the comb without installation with a pin (white) (from 1 piece) is 160 rubles.
The cost of the comb with installation (with a pin) is 350 rubles.
Minimum order cost (with installation) - 2000 rubles.

The main dimensions and discreteness of opening of the combs.

Summary table of main comb sizes.

Presented in the table plastic combs are described in detail on the page comb for plastic windows.

Comparative table of the main sizes of window opening limiters (combs)	Euro metal combs (imported production)	Euro metal combs (Russian production)	USSR-metal combs (Russian production)
Distance between centers of holes for mounting comb (mm)	40	28	one hole
Height and width of the platform for mounting the comb (mm)	15 x 55	12 x 40	16 x 25
Comb height(mm)	19	20	18-22
Possible fixations of the comb (distance from the surface of the frame/impost to the surface of the sash) when the sash is rotated (mm)	57, 77, 100, 121	24, 40, 58, 73, 87	afloat: 65, 89, 113, 139, 166 Under the arm: 51, 75, 98, 123, 150
Pin length(mm)	11	16	20 - floating 16 - under the handle
Price	Comb (white) - 450 rub.	Comb (white) - 200 rub. Comb (box) - 230 rub. The minimum order value is 2000 rubles.	The minimum order value is 2000 rubles.

Disadvantages of window opening limiters.

The disadvantages of window opening limiters include:
1. The window remains fixed, but not closed. If the room is located on the lower floors, then it becomes accessible to an intruder.
2. For young children, this is not a window lock, but rather something interesting that needs to be touched and overcome.
3. Even if the sash is in the folding position, the air flow spreads not only vertically, but also horizontally and being located next to the window is not always pleasant and useful.
4. The window is open, which means that all its noise-proof properties disappear.
5. Even with the smallest possible opening, the sash opens/reclines on three sides of the perimeter and total area the gap turns out to be quite large, therefore, when negative temperatures the room quickly cools down. In winter, at night, you are unlikely to be able to use the comb, it will be very cold.

Supply ventilation valves.

However, the need for access to fresh air into the room remains even at subzero temperatures. Window windows help provide this access. ventilation valves.
ABOUT supply ventilation described in detail on the window ventilation page, about the types of valves on the page supply ventilation valves.
If you are going to solve problems with the help of window valves: fogging of windows, stuffiness of the room, “crying” windows, mold formation on window slopes, then a valve of average performance is quite sufficient.
The problem is the obvious lack of fresh air, i.e. "to breathe" closed windows, can be solved by installing valves with higher capacity or several valves of average capacity.

Window opening limiter for safe ventilation.

Aluminum window opening limiter (Russian production).

Until recently, there was only one type of window opening limiter for safe ventilation - BABY SAFATY, but in 2011 a Russian limiter appeared; it leaves the window safe in the rotary and tilt-and-turn position.

We do not sell or install it.

Metal opening limiter, for aluminum windows.

This opening limiter is installed on “warm” aluminum windows and on casement windows made of aluminum profile PROVEDAL (“cold”) and its analogues.
In terms of the number and “size” of possible fixations, it is similar to the USSR-comb.
The limiter is steel, with 5 fixations, white.
The pin is steel, white, installed under the handle.

The following is important for the comb to be installed (please check):
- appearance handles (shown in the photo),
- dimensions of the base of the handle, they are: width - 27mm, height - 135mm,
- the principle of operation of the handle - when you turn the handle, the “pushers” converge and diverge (look from the other side of the open sash),
- the free space (on the frame) for installing the limiter is the distance from the edge of the sash (opposite the handle) to the nearest something (wall, slope, adjacent sash, bay window connection, etc.). There should be at least 18mm of free space, since the width of the base of the limiters is 17mm.

If the appearance or dimensions of the base of the handle (on your windows) are different, and, in your opinion, it is not possible to install a limiter, send a photo by email, maybe something will come up with.

The opening limiter is sold only with installation, the cost is 600 rubles, the minimum order amount is 1600 rubles.

If you haven't noticed, let us repeat that
The comb itself can be plastic (as in the photo on the left), about it

Comb (white) - 120 rub.
Comb (box) - 150 rub.

Comb (white) + Installation - 300 rub.
Comb (box) + Installation - 330 rub.