The Fail-Safe VR 2000 9-Inch Square combines strength-gaining architecture with energy-saving technology. Architecturally angled facets with radius corners actually increase the ability of the lens to deflect blows and absorb impact. The extra-thick, injection-molded polycarbonate lens incorporates optical design that obscures the lamp image and spreads light evenly. It is UL/cUL listed for wet locations, the durable, versatile 9-Inch Square EC/EW is perfect for use in corridors, dormitories, public restrooms, rapid transit stations, loading docks, and minimum security institutions.