Switch covers are used with single gang device boxes and are suitable for dry locations only.Material: -Cover: 316 SS-Screws: 316SSStandards: ASTM A240, ASTM F593Compliances: UL Listed for Canada and US (Standard 514A) UL File Number QCIT.E300676 Canada UL File Number DWTT7.E300676Supplied complete with molded gasket and Type 316 SS screws.