Infrared Quartz Electric Heater, Overall Height Not Applicable, Overall Length 24 in, Overall Width 21 1/2 in, Overall Depth 11 in, Phase 1, 3, Voltage 480V AC, Wattage Output 4800 W, Beam Pattern 30 Degrees , Element Type Quartz Lamp, Housing Color Silver, Housing Material Stainless Steel, Mounting Type Chain Permanent, Recessed, Surface, Suspended, Wall, Grille Depth Not Applicable, Heating Capacity 16,382 BtuH, Heating Method Radiant, Housing Finish Stainless Steel