Durable polycarbonate & synthetic neoprene rubber expandable in-use cover. Will not dry rot, crack, or deteriorate in sunlight or other rugged weather conditions. Patented design expands from 1 In. to 3-1/2 In. to accommodate a wide variety of cords and plugs. Includes attached gasket, mounting hardware, patented Quick-Fit keyhole mounting system for installation in under a minute, and 100% paintable surface. NEMA (National Electrical Manufacturers Association) 3R compliant.