This is Dapper 11500 series ,15mm square slot position hinge ,the
slot width is 15mm ,we can produce the thickness of the bar are
2.0mm,2.5mm,3.0mm or others ,the length are from 8”to 18”. We
always use the stainless steel 304 ,if you need ,we can use steel
or 430. We can produce the window friction hinge according to your
drawing or your sample .