This is single bar slide friction hinge series ,27.5mm square slot
slide friction hinge the slot width is 27.5mm ,we can produce the
thickness of the bar are 2.0mm,2.5mm,3.0mm or others ,the length
are from 10”to 28”. 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 .