Columbia Lighting® Versabay® Fluorescent High Bay Fixture, 4 Ft., Uses 4 T5ho Lamps, Narrow Beam, Uplight, Programmed Start

FEATURES | Optical design to provide one-for-one replacement for 400 Watt metal halide high bays | Advanced Thermal Management (ATM) provides optimized electrical component heat dissipation system for cool running ballast operation in unconditioned ambient spaces, your choice of T8 or T5HO - suspension mounting only | LHV includes industry leading 5-year warranty at 65°C ambient operation for T5HO and 5-year warranty for T8 at 55°C for 277V and 50°C for 120V. | Easy center-ballast cover allows tool-less access to electrical components without the removal of lamps, reflectors or hardware. | Extremely low profile - only 2" overall height allows fixture to be installed without concern about obstructions | Product design accommodates quick and simple hanging systems including chain, tong, pipe hanger, or aircraft mounting | Rotary locking lamp holders secure lamp in position and conceal contacts | Access cover in channel for easy wiring access | UL listed, suitable for damp locations