S.S. 22mm Square Groove Four Bars Window Hinge Series Used for aluminum alloy and UPVC casement windows and top hung windows. Max. window weight: 45kg, Max. opening angle: 87 degrees.

Made of s.s. 202#, 301#, 304#.

Conforms with QB/T3888-1999.

In good condition after 50000 times tests.

Spec.: (bar thickness*bar width-groove width)

2.5*17-22(mm), Size: 8/10/12/14/16/18;

Spec.: 3.0*17-22(mm), Size: 10/12/14/16/18;

Spec.: 2.5*18-22(mm), Size: 8/10/12/14/16/18;

Spec.: 3.0*18-22(mm), Size: 10/12/14/16/18.

window hinge