High bay 4 lamp T8 fluorescent fixture is the superior ligt option to illuminate manufacturing/distribution facilities, gymnasiums, schools, stores, warehouses or any high ceiling industrial building. Great for new construction or remodel and renovation projects. • Energy cost savings of up to 50% as compared to Metal-Halide or High Pressure Sodium high bays. • 13,000 Lumens, Aluminum 86% reflector, HPF electronic ballast included • Hinged wire guard and heavy gauge chain mounting kit included