USHIO Quartz Infrared Heater Lamp - QIH120-500/S: Description - 500 Watts - 120 Volts Dimensions - MOL (mm) 223.0 LL (mm) 127 L1 (mm) Color Temp (k) - 2500 Avg Life (h) - 6000 Alternate Designation - QH500T3/CLUSHIO Quartz Infrared Heater Lamp - QIH120-500/S