HID Lamp, Universal Burning Position, MH1000W/U STD, 1000 W, 263 V, Metal Halide Lamp, Medium E26 Lamp Base, BT56, 110000 lm Initial, 71000 lm Mean, 12000 hr Average Life, 65 CRI, 4000 K Color, Probe Start, Clear, 7-6/50 in Dia x 15-43/100 in L, 110 lm/W Efficacy, 9-1/2 in Light Center Length, 210 deg C Base, 430 deg C Lamp, Standards/Approvals: ANSI M47/E Specified