Frame: Powder coated high quality aluminum alloy. Color of Frame:Black,white,silver grey or customizable. Blind: Opaque organ type blind,pull up and down Door Lock: Special lock for RV. Main Functions: Ventilate,allow sunlight in,prevent insects,and good water seal. when the door is locked,it is still ventilated. Fitting: Installing by separate fixed plate,equipped with round corner out-pushed window and aluminum frame inside screen window adopt the way of pull up and down,its installing way is with self-tapping screw Applications: Teardrop motorhomes,Tent trailer. Wall Thickness: 25-50 mm Free Choice