Defender Restricted

A friction hinge designed specifically for resident safety. 

Features

• Improved weather sealing and draught proofing performance from extended enclosed end cap and asymmetrical vent arm form when tested to BS 6375-1
• Unique robust cam friction device eliminates any risk of friction screw misuse 
• Built-in quick release lever allows the window to be fully opened for easy cleaning and total ventilation 
• Asymmetric location system for reliable and accurate closure 
• Restrictor automatically relocates and resets when the window is closed 
• Slot-hole-slot vent fixing configuration for ease of adjustment and guaranteed fixing into reinforcement on PVC-u window frames
• Available as highline variants from profiles with cavities between 16mm and 18mm 
• Available in ferritic 430* as standard and austenitic 304* stainless steel for enhanced corrosion resistance 

Specification 

• 10 or 12 year mechanical guarantee** 
• Endurance tested to 30,000 cycles 
• Corrosion tested to a minimum of 96 hours 
• Secured by Design approved 
• BBA certification 
• Compliant with BS 6375-2 and EN 12126-5 

*Standard ferritic (was 430) to BS EN 10088-2 Grade 1.4016 or Austenitic (was 304) stainless steel to BS EN 10088-2 Grade 1.4301 for enhanced corrosion resistance 

** 10 year mechanical guarantee for Standard Ferritic and 12 year mechanical guarantee for Austenitic Stainless Steel