Sun System 6 switchable HPS-or-Metal halide grow light, with the Suoer Sun 11-1/2"Wx6-3/4"Hx21"L horizontal Reflector. Reflector sides and ends are angled and lined with a revolutionary 95% reflective aluminum insert, louvered on both sides and features Adjust-A-Socket mechanism to center lamp. Optional 4 inch air cool fittings and tempered glass lens. Excellent luminescence over a 10' x 10' area. Accepts all lamp sizes except BT56. 5-year rebuild or replace warranty.