Outstanding points of products:
1, Stay at any angle without needing to add extra friction supporter.
2, 80 KG of loading , safe guarded by drop testing, i.e. taking away one hinges and let one hinge alone to hold the sash after push out the sash .
3, Horizontal adjustment +/-3mm , Height Adjustment +/-2mm.
4, Excellent corrosion resistant capability. NSST 720 hours according to ISO 9227.
5, Friction is adjustable .
6, fully engagement of fittings and profile. The guide rail and back plate are inserted into profile. Then it is tightened by clamping, instead of self-tapping screw. This is why the hinges improve the safety of sash.
7, Air pressure and airtightness reaches CE 5.
8, Designed life is 35 years.