208 V; 11.1 AMPERE; POWER RATING 4000 W; 3 PHASE; 40 TO 90 DEG F BUILT IN THERMOSTAT, FAN DELAY SWITCH CONTROL; STEEL FINNED METAL SHEATHED HEATING ELEMENT; PERMANENT LUBRICATED MOTOR; AIR FLOW RATE 100 CFM; HOUSING SIZE 15 3/4 INCH W X 19 3/16 INCH H