Fluorescent Ceiling Troffers: Housing Mounting Type - Grid Troffer; Fixture Width - 1 ft; Fixture Length - 4 ft; Fixture Depth - 3.75 in.; Lamp Quantity - 2; Lamp Type - 32T8; Lamp Included - No; Ballast Voltage - 347; Ballast Type - Electronic; Lens - Acrylic No 12; Air Function - Static; Door Type - Hinged Frame; Manufacturer Model - Series GR8