Side hung restricted window hinge in stainless steel, shown in an open position, designed for enhanced security and limited window opening.
Diagram showing window hinge types viewed from inside
Close-up view of a security restricted window hinge (friction stay) in stainless steel, showing the pivoting arms and locking mechanism.
Technical diagram of a security restricted top hung window hinge (friction stay) showing opening angles, button position, length, and 13mm stack height.
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Side hung restricted window hinge in stainless steel, shown in an open position, designed for enhanced security and limited window opening.Diagram showing window hinge types viewed from insideClose-up view of a security restricted window hinge (friction stay) in stainless steel, showing the pivoting arms and locking mechanism.Technical diagram of a security restricted top hung window hinge (friction stay) showing opening angles, button position, length, and 13mm stack height.

Security Restricted Window Hinges Friction Stay Side Hung 12 Inch – Replacement uPVC Window Hinge

AvocetSKU: HS3033
162 reviews from verified buyers
Price:
£5.99

Key benefits

  • Restricted-opening security hinge - limits opening for safety
  • Side-hung or top-hung - match your window type
  • Sized 12" to 24" - match your existing hinge length

100% SECURE PAYMENTS

HASSLE FREE RETURNS

FULLY TRACKED DELIVERY

Description

These hinges are designed to open to a restricted distance of around 10cm. A button can then be pressed to allow full opening. 

For use with windows that are:

Side Hung - Only bottom hinge has restrictor push button

See image for guidance on window hang type

Sold in pairs (1 left, 1 right). Supplied with 13mm (standard) stack height. Hinge packers can be purchased separately to increase depth to 17mm.

Features & Benefits

* Enhanced weather sealing - enclosed end caps, asymmetric location system and profiled vent are all help 
* Long life expectancy - uses Thermoplastic components and tested to 30,000 cycles 
* Smooth operation - patented lipped slider 
* Easy friction adjustment - without metal-to-metal contact 

Common symptoms of failing friction hinges

* Difficulty opening and closing the window? 
* Window not closing tightly into frame? 
* Draughts through closed window despite gaskets in place? 
* Window fails to stay in position when partially open?

If you experience any of the above then you should consider repairing or replacing the hinges, before the situation gets worse and also becomes a security risk.

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Frequently Asked Questions

Security restricted window hinges are specialised friction stay hinges designed to limit how far a window can open. They improve safety and security while still allowing ventilation.

A 12-inch side hung friction stay hinge is commonly used on uPVC and aluminium side-opening windows. It provides smooth opening movement while supporting window stability and controlled opening.

Restricted hinges help prevent windows from opening too wide, reducing the risk of falls and limiting unauthorised access from outside. They are especially useful in homes with children or in upper-floor rooms.

Compatibility depends on the window type, frame material, sash size, and hinge dimensions. Always compare your existing hinge measurements before purchasing a replacement.

Choosing the correct hinges and mechanisms depends on your window design, size, and security needs. To learn more, read: How to Choose the Right Window Mechanism: Friction Stays & Espagnolette

About the Brand - Avocet ABS

Avocet ABS is one of the UK’s leading names in high-security door hardware, trusted by homeowners, locksmiths, and security professionals for its proven protection against modern burglary techniques. Known for its ABS 3-Star Euro Cylinder, Avocet has built a reputation for developing advanced, police-approved security solutions that combine innovative engineering with long-lasting durability.

Every Avocet ABS product is designed to exceed the highest industry standards, offering anti-snap, anti-pick, and anti-drill protection to keep homes secure. The brand’s commitment to quality and continuous improvement has made it a top choice for upgrading uPVC, composite, and wooden doors with reliable, insurance-approved security.

Choosing Avocet ABS means choosing trusted technology, exceptional build quality, and maximum home protection—making it a standout brand for homeowners who demand the best in door security.

Explore Avocet ABS