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Universal Concealed Window Restrictor Kit

Universal Concealed Window Restrictor Kit

SKU: KOR-2376-1001
MPN: RST42011_95_115_145

£4.90

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Description

Universal concealed restrictor for peace of mind

Universal Concealed uPVC Window Restrictor

Name: Universal Concealed Window Restrictor Kit
Brand: Kore
SKU: KOR-2376-1001
Price: 4.9 GBP
Availability: InStock

(Choice of handedness)

Safe, smart ventilation for every window

High quality, stainless steel concealed window restrictor that fits most PVC-u, timber, and aluminium windows. Spring-loaded, autolocking mechanism, capable of limiting sash opening to 89mm and ensuring robust and reliable child safety for ultimate peace of mind. Choice of left and right-handed restrictor arm and supplied with three strike plate stud options for universal fitting.

Fits discreetly between frame and sash on side-hung and top-hung casement windows, delivering effective restriction without compromising the aesthetics of the window. Allows windows to be opened for ventilation, whilst keeping the room secure, and the vulnerable protected. The releasable arm enables unrestricted opening when required – ideal for emergencies, cleaning, and deep ventilation.

Features & Benefits

Universal – widely compatible and supplied with all stud options
Durable – strong stainless steel construction
DIY friendly – simple to fit to new and existing windows
Concealed design – no visible hardware on window face
Quick release – easy, tool-free unrestricted opening
Auto-locking – consistent and reliable restriction
Child safe – capable of limiting opening to 89mm
Quality assured – complies to BS 6375-2:1987

Did you know? Around 4,000 children each year are injured from falls out of windows. Installing a simple window restrictor can help prevent these accidents while keeping rooms safely ventilated.

Specification

Measurement	Value
Arm Size (H × W × D)	102 × 16 × 7 mm
Stud Sizes (H × W × D)	9.5 mm stud – 40 × 16 × 9.5 mm 11.5 mm stud – 40 × 16 × 11.5 mm 14.5 mm stud – 40 × 16 × 14.5 mm
Material	Stainless Steel
Finish	Brushed / Satin Stainless Steel
Compatibility	Suitable for 13 mm and 17 mm friction hinge stack heights
Window Type	Top-hung and side-hung uPVC windows
Operation	Spring-loaded, self-engaging restrictor arm
Handing	Available in Left or Right Hand (select correct version before fitting)
Installation	Concealed fit – suitable for new installs or retrofitting

Contents

Fitting & Usage

Installation Guide – Concealed Safety Window Restrictor

Before You Begin

Select the correct hand – use the diagram to choose left or right.
Choose the correct stud size for the friction hinge stack height:
- 13mm stack = 9.5mm stud
- 17mm stack = 14.5mm stud
- If unknown, use 11.5mm (standard)
Ensure the sash and frame are clean before fitting.

Step 1: Fit the Restrictor Arm (on the Sash)

Position the restrictor arm in the sash euro groove, ensuring alignment with where the stud will sit.
Open and close the sash to check clearance and smooth operation.
Adjust the arm’s position so the sash opens to your chosen limit – typically no more than 100mm for safety. For a wider opening, move the restrictor further along the sash.
Mark fixing points, drill two pilot holes, and secure the arm using suitable screws.
Check the arm moves freely and the spring-loaded action engages smoothly.

Step 2: Fit the Restrictor Stud (on the Frame)

With the window open, mark where the restrictor arm meets the outer frame hinge channel.
Drill pilot holes, then fix the chosen stud securely in place, keeping it level and flush.

Step 3: Engage and Test

Close the sash to engage the restrictor.
Reopen to test restricted movement – the arm should prevent the sash from opening beyond the set point.
To release, press the arm inward toward the sash before opening fully.
Repeat a few times to confirm smooth operation.

Final Checks

Ensure all screws are tight and secure.
Confirm restriction and hinge movement are smooth.
Wipe away any debris or swarf.

Delivery

SHIPPING

We endeavour to despatch most orders within 1 working day. Where possible, orders received before 1:00pm may be despatched the same day. Accurate despatch times are available on individual product pages.

Most orders (those being stock items below 1.2m in length) will be despatched same day when ordered before 1pm, and received the following delivery day. We deliver items of that size from Monday to Saturday. Stock items over 1.2m are sent using a two-day carrier, who do not deliver on a weekend.

Due to the size and nature of some bespoke, and non-stock products, we offer restricted delivery options. Delivery options can be selected at the checkout page before payment Is made.

DELIVERY AND RETURNS

Any dates quoted for delivery of the goods are approximate only and Truly PVC shall not be liable for any direct, indirect or consequential loss suffered by the customer arising from any delay in the delivery of the goods.

All deliveries must be received, and where appropriate, signed for, by a person over the age of 18 years old.

Delivery takes place, and risk passes to you, at the earliest of the following:

When the goods are handed over to you or your agent at Truly PVC’s premises.
When the goods leave the premises of Truly PVC.
On the 7th day after you have been notified that the goods are ready for despatch.

Customers should notify us within 7 days of the invoice date for any alleged defect, damage, failure to comply with description, missing items, or discrepancies. If no notification is made within this period, the goods are deemed accepted and free from defect.

Customers are responsible for obtaining any necessary licences or permissions for importing goods into their country of destination.

Long Lengths (over 1.2m)

For any product over 1.2m in length we cannot guarantee a ‘Next Day’ delivery service. Products over 1.2m have to be manually handled in some Depots and this can often add 1 – 2 days to the delivery time.

DELIVERY PROHIBITIONS

Orders for aerosol items, items over 1m, or deliveries to remote locations (e.g., Scottish Highlands, offshore islands, Northern Ireland) may not be fulfilable or may incur a surcharge.

Should this be the case, we will contact you with the option of either paying the surcharge or cancelling the order. Remote postcodes include AB30-AB38, AB40-AB56, BT, FK17-FK21, G83, GY, HS, IM, IV, JE, KA27-KA28, KW, PA20-PA99, PH, TR21-TR25, ZE.

COLLECTION (from our Warehouse)

To collect your order, choose 'Collect in Person' as the shipping method. We will contact you if there is an issue preparing your order, so please provide a contact telephone number.

Stock items are usually available for collection 1 business day after ordering. For early collection or non-stock items (e.g., polycarbonate), please call 0161 339 4982.

Warehouse opening times:

Monday to Friday: 8:30am – 4:30pm
Saturday: 8:30am – 12:30pm
Sunday: 8:30am – 4:30pm

Unit 2, 34 Wood Street
Openshaw
Manchester
M11 2FB

*Bespoke items may take 1-2 working days to prepare for collection, with non-stock items, such glazing bars and roof sheets taking longer. Please enquire before making your journey to collect.

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