Meterial:SS304,SS301,SS202,SS201 Bar thickness:2.0/2.5/3.0mm Track width:19mm Top/side/bottom hung High bearing capacity  Round Groove Friction Stay HingeMeterial:SS304 .SS301 ,SS202  ,SS201 .All rivet joints are spun-riveted with special nylon washers in between for extra smooth actionBe suitalbe for UPVC windows and ventilators.Operates normally after 30000 times strict opened/closed.It provides adequate friction at all opening angles.Available for left and right hands.All friction stays are tested to rigorous salt-pray test for protection against corrosive atmospheres.Fine workmanship .Easy to install.Reliability is our strong point..The products are conformes to national technical standard QB/T3888-1999 for <Aluminum Alloy Stainless Steel Window Hinge>. 

Size/inch	Casement Width(C)	Arm  Width(B)	Max.Vent Height	Max. Vent Width	Max.Vent Weight	Bar  Thickness	Height	Opening Angle
8	19	1516	1000	500	11	2.0±0.2	15±0.5	60°±2°
10	19	1516	1100	500	16	2.0±0.2	15±0.5	88°±2°
12	19	1516	1200	600	19	2.5±0.2	15±0.5	88°±2°
14	19	1516	1400	700	22	2.5±0.2	15±0.5	88°±2°
16	19	1516	1500	800	25	2.8±0.2	15±0.5	88°±2°
18	19	1516	1500	900	28	2.5±0.2	15±0.5	88°±2°
20	19	1516	1800	1000	32	2.5±0.2	15.5±0.5	85°±2°
22	19	1516	1800	1100	32	2.5±0.2	15.5±0.5	85°±2°
24	19	1516	1800	1200	32	2.5±0.2	15.5±0.5	85°±2°