Lightline Indirect/ Open 2 3/4" x 2 1/2" Rectangular LL1 1 T5/ T5HO, 1 T8, Indirect/Open Housing AA 6063 T6 extruded aluminum. Diecast end plate mechanically attached with no exposed fasteners. Die-formed reflectors of baked white enamel (nominal reflectance 86% and hammertone specular aluminum. Satin anodized or white paint standard; custom colors available. Specify 120 volt, 277 volt, or 347 volt. UL and C-UL listed and labeled. 4', 8' and 12' lengths. Refer to specification data sheet for specific product information