Yale EDTR20A Defender Restricted Friction Stay Hinge – Top Hung 20" (513mm) Austenitic 304 – Pair
Yale Defender Restricted Friction Stay Hinge – EDTR20A (Top Hung, 20" / 513mm) – Pair
Upgrade your window security and safety with genuine Yale Defender Restricted friction stays. Designed specifically for top-hung windows, these hinges feature a built-in restrictor for resident and child safety, alongside a quick-release lever that allows the window to be fully opened for cleaning or emergency ventilation. Supplied as a pair.
Key Features
- Child Safety & Security: Built-in restricted opening that automatically resets when the window is closed.
- Quick Release System: Easy-to-use lever allows full opening for cleaning.
- Premium Material: Made from Austenitic (304) stainless steel for maximum rust and corrosion resistance.
- Reliable Closure: Features an asymmetric location system for a smooth, weather-tight seal.
- Fully Certified: Secured by Design approved, BBA certified, and compliant with BS 6375-2 and EN13126-5.
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Yale (ASSA ABLOY Group) |
| Model / MPN | EDTR20A |
| Application | Top Hung (Must be fitted in pairs) |
| Length | 20" / 513mm |
| Nominal Stack Height | 13mm |
| Max Vent Weight | 26kg |
| Vent Height Range | 700mm to 1100mm |
| Max Opening Angle | 50° |
| Restricted Opening Angle | 7° |
| Material | Austenitic (304) Stainless Steel |
Frequently Asked Questions
Are screws or fixings included?
No, fixings are not included. You will need to use your existing screws or purchase new ones suitable for your specific uPVC, timber, or aluminium window frames.
How do I know if these will fit my window?
You need to measure your existing hinges. Check that they are top-hung, exactly 20 inches (513mm) long, and have a stack height of 13mm.
How does the restrictor mechanism work?
The built-in restrictor stops the window from opening past a certain point (approx. 7°) for safety. To open the window fully, you simply press the built-in quick-release lever. The restrictor automatically re-engages the next time you close the window.
Do I need to buy a left and right hinge separately?
No, this listing is for a complete pair. You will receive one left-handed and one right-handed hinge, which is exactly what you need to replace the hardware on a single top-hung window.
