Electric Infrared Heater Overall Length 31 in Overall Width 10 in Overall Depth 6 in Phase 1 Voltage 208/240V AC Wattage Output 3000W/4000W Beam Pattern 45 Degrees Element Type Quartz Lamp Housing Color Silver Housing Material Aluminum Mounting Type Surface Suspended Grille Depth 1/2 in Grille Height 4 1/2 in Grille Width 31 in Grille Material Coated Steel Galvanized Heating Capacity 13 648 BtuH Heating Method Radiant Housing Finish Powder Coated