Sun System AC/DE Air-Cooled Double Ended Reflector 8 in for HPS HSP Lamps Hydroponics 95% reflective textured German aluminum interior 98% reflective corner inserts offer excellent uniformity, output and diffusion Galvanized steel housing with durable powder coated finish Manufactured with exacting standards and double neoprene gaskets for an air tight seal Hinged glass makes changing lamps and cleaning glass easy