Concealed - Automatically Re-engaging Restrictor

Features Include:

• Left and Right handed

• Concealed within the sash.

• Suitable for outwards and inwards opening windows. 

• Self-engaging when the window is closed.

• Gives a maximum of 50mm opening providing an element of ventilation and child safety. 

• Conforms to BS EN 14351:2006 Clause 4.8

• BSEN ISO 9001/2015 Quality Management System 

Discreet yet dependable, our concealed spring-loaded window restrictor enhances both security and safety by limiting how far a sash window can be opened. Tucked neatly within the window, it maintains a clean, uncluttered appearance while delivering powerful protection — ideal for child safety, fall prevention, and unauthorised access deterrence.

With a simple finger-release mechanism, users can fully open the sash when needed. Once closed, the spring mechanism automatically re-engages, ensuring continuous safety without the need for manual resetting. This makes it especially valuable for rental properties, where landlords are often required to install automatically re-engaging window restrictors that offer long-term, maintenance-free compliance.

Its concealed design is perfect for period-style or modern sash windows where visual impact must be minimal, without sacrificing safety performance.

Installation Tip:

For best results, we recommend fitting the restrictor arm to the sash and the stud to the frame. This orientation ensures smooth operation and optimal engagement when the window is opened or closed.