Product Description: GLO-BRITE EXIT SIGNS Wall Mount Exit Signs Right - Rigid Plastic These photo luminescent sings absorb and store energy from ambient fluorescent light. Glo Brite signs are easily visible in the event of a sudden blackout. Signs are listed to UL 924 through UL . Signs are maintenance free; no mechanical or electrical power source required and will last 25+ years. Meets NFPA Life Safety code 101, and OSHA requirements. Meets current building codes including IBC, ICBO, BOCA, SBCCI and NFPA. 9.00 L. 1.00 W. 8.00 H.