The PLT pulse start metal halide high bay fixture is ideal for lighting warehouses, auditoriums, gyms, hangars, or even industrial or retail centers. This open-rated fixture features a powder-coated, die cast aluminum housing and comes with a 22 inch acrylic refractor. The included pulse start metal halide lamp is open-rated, making a lens unnecessary. PLT adheres to the strictest quality control and quality assurance procedures in the ballast and lamp industry. Each PLT product is tested under the toughest conditions and meticulously factory checked for defects in materials to reach you in perfect condition.