Yellow polycarbonate. Spring loaded. For weatherproofing old style 26CM10 receptacle. Meets the most stringent requirements of UL's three listing categories for weatherproof plates. Stainless steel screws and neoprene gasket included for mounting to FS/FD type weatherproof boxes. 2 versions available: HBLCM25W0A fits current 26CM10 receptacles HBL74CM24W0 fits old style 26CM10 receptacles.
