Topaz's 50W, 5000K, Tri-Proof Vapor Tight Luminaire comes with battery backup for 90 minutes of emergency power. This luminaire is the perfect solution for a wide range of applications including garage, warehouse, stairwells, marine and subways. Provides an IP65 rated weatherproof, dust proof and corrosion proof luminaire. Superior quality compared to other products on the market and offering 130 lumens per watt. The luminaire can be surface, or suspension mounted.