Zero maintenance- no bulbs, no battery replacementExit sign measures 15-1/2W x 8-3/4"HLED or fluorescent light activationDesigned for surface flag, ceiling or conduit mountingSuitable for both high-level and low-level applicationsMeets NFPA Life Safety Code 101 and OSHA requirements: International Building and Fire Code 2009, 2012, 2015Made from ABS plastic and a photoluminescent panel, this exit sign glows for up to 100 feet of visibilityZero maintenance- no bulbs, no battery replacementExit sign measures 15-1/2W x 8-3/4"HLED or fluorescent light activationDesigned for surface flag, ceiling or conduit mountingSuitable for both high-level and low-level