Window Hinges

Defender Rotowinder special purpose friction hinge

  • For use with windows fitted with winding gear
  • Asymmetric location system for reliable weather sealing to BS 6375-1
  • Patented lipped slider for enhanced smooth operation
  • Easy friction adjustment without metal to metal contact
  • Unique patented, robust cam friction device eliminates any risk of friction screw misuse
  • Long and reliable working life tested to 30,000 cycles 
  • Available in 12" side hung
  • Austenitic* stainless steel for enhanced corrosion resistance and strength
  • 12 Year Guarantee (details available upon request)

* Austenitic (was 304) stainless steel to BS EN 10088-2 Grade 1.4301 for enhanced corrosion resistance.


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AUSTENITIC Stainless Steel
Side Hung
Max vent
weight (kg)
Min vent
width (mm)
Max vent
width (mm)
Opening angle
(+/- 2.5°)
20 300 600 88°
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