Duo-Corp Patriot Hopper White Glass/Vinyl Replacement Window 18 W x 31-3/4 L x 2-1/8 Thick in.Brought to you by duo Corp is this patriotic hopper white glass window. The vinyl glass window has a true sloped sill for efficient water removal. A pivoting friction hinge system of this window casement allows the sash to rotate and stay at the desired opening. Fully weather stripped, this viny window with 2x sash top and sides and 3x sash bottom is ideal as a window replacement. Use this white viny window with an extruded fin on the sill for mortar