single-gang horizontal/vertical while in use cover, expandable, nonmetallic white, extra duty rated, 16 in 1 interchangeable plate configurations. nema 3r rated nec 2014 compliant (article 406.9a & b) extra duty rated revolutionary patented design expands from 1" to 3" for while-in-use needs 100% paintable surface ultra rugged polycarbonate & synthetic neoprene rubber that will not dry rot, crack or deteriorate in sunlight patented quick-fitâ„¢ keyhole mounting system allows installation in under a minute. includes attached gasket and mounting hardware