This Architectural Drawing is AutoCAD 2d drawing of 2d cad block of cushions in AutoCAD, dwg file. The covers, commonly referred to as throw pillow covers or cushion covers, are often sold separately from the insert. These covers have a zipper opening, which comes in two variations: an envelope, which is used to conceal the zipper behind, and a hidden opening, which is found at the bottom, reverse of the cushion.