Quick Details 1.Model Number: YJ-32,37,42,55,77mm 2.Surface finish: Surface treated power coating 3.Max Width: window 4.5m 4.Max Making Size:22m2 for window 5.Operationtubular motor or manual 6.Control: Switch, remote control, crank£¬nylon belt 7.Material: aluminum alloy T3005 8.Color: white, gray, beige etc. carton box or plywood