Electric Infrared Heater Panel Emitter Overall Length 48 in Overall Width 3 in Overall Depth 3 in Voltage 480V AC Wattage Output 3 150 W For Use With CH-448-1A CH-448-1C Mfr No MR-448-1 Amperage 6.56A 1 Phase Material Black Quartz Cloth Cement Bond Refractory Board and Resistance Wire Steel Frame Includes Element Panel Assembly Heater Housing Guard Mounting Hardware Manufacturers Warranty Length 1 yr Standards ETL US Canada