Vandal Resistant Surface Mount Linear LED Luminaire. 18 gauge 304 Stainless Steel Die Formed and Seam Welded Housing/Door Frame. High Impact .187" thick Clear Prismatic Polycarbonate sealed into door frame with long lasting neoprene closed cell gasket. Specially Designed with 304 Stainless Steel piano hinges for Easy access to components, while maintaining Tamper-proof integrity. Built to Comply with US and Canadian Safety Standards. 3G Vibration Certified. IP65 Rated.