Columbia Lighting LHR4-454-GW-ST-4EPU-LHHB 48" x 17-3/8" Ultra-Efficient Fluorescent High Bay, 4 Lamps, 54W T5HO, Gloss White Powder Coat Reflector, Solid Top, No Uplight, Programmed Start Ballast, 120-277V, Universal Hanger Bracket Kit

Columbia Lighting LHR4-654-GW-ST-24EPU-LHHB 48" x 23-1/2" Ultra-Efficient Fluorescent High Bay, 6 Lamps, 54W T5HO, Gloss White Powder Coat Reflector, Solid Top, No Uplight, Programmed Start Ballast, 120-277V, Universal Hanger Bracket Kit