Electric Infrared Heater Panel Emitter Overall Length 29 in Overall Width 12 in Overall Depth 6 in Voltage 480V AC Wattage Output 4 300 W For Use With CH-648-3A CH-648-3C Mfr No MR-648-3 Amperage 5.2A/8.9A 1 or 3 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