LED Tri-proof Lights / LED Vapor Tight Light are Water-proof, Dust-proof, Damp-proof fixture. Highly resistant to heavy impacts and can sustain temperature variation of low to -40°C, up to 50°C. Suitable for parking lots, warehouse, cold storage, poultry shed, barn, and farmhouse. Using Epistar 2835SMD, light efficiency up to 150lm/w. Using BOKE flicker free driver, realiable quality, offer 5 years warranty.