Recessed Troffer, Fixture Type Lens Troffer, Lamp Quantity 2, Lamp Type F32T8, Suggested Lamp Item 4WW60, 32 Lamp Watts, 56 Fixture Wattage, 120-277 Voltage, Ballast Quantity 1, Instant Start Electronic Ballast Type, Description/Special Features Acrylic Diffuser, 0 to 104 Degrees F Ambient Temp. Range, No Lamp Included, Replacement Lens 1VNN1, 3-3/16 In. Height, 48 In. Length, 24 In. Width, Standards UL Listed, CSA Certified, NOM Certified, Series GT8 Lens TroffersFluorescent Commercial Recessed TroffersMaximize light output for most commercial applications. SP5 and SP8 series include program start ballasts, which should be used when lighting controls are needed. Low-profile design is suited to restrictive plenum applications. Smooth, hemmed edges make handling easier. Use in offices, schools, healthcare facilities, and retail applications.T8 electronic ballast systems provide 30% to 40% energy savings when compared to F40T12 magnetic ballast systems. Fixtures with GE UltraStart ballasts maximize lamp life in frequently switched applications typically associated with the use of sensors and controls.120/277V Easily positioned integral T-bar clips secure fixture to T-bar system Lamps not included (except 3YA10)