Heavy duty 4 bar friction hinges made from austenitic SS304 steel suitable for aluminium and PVC–U applications. 
 

Specially designed for side hung vents for aluminium as well as PVC-U Windows.
 

Self-balancing with excellent weather sealing capabilities.
 

16.5 mm stack height & base channel width 22.5 mm.
 

Suitable options available for side hung vent sizes upto 900 mm x 1500 mm and vent weights up to 50 kg.
 

Available sizes: 10 inch - 16 inch.