Product Type Free-Standing Vented Gas Floor Heater Fuel Type Propane Cabinet Style Solid Face Heating Capacity Input 20 000 BtuH Heating Capacity Output 16 300 BtuH Thermostat Included Unit-Mounted Vent Diameter 3 1/2 in Overall Height 26 in Overall Width 37 in Overall Depth 15 3/4 in Safety Features Automatic Shut-Off of Main and Pilot Gas Air Flow 350 cfm Air Flow Direction Horizontal Air Temperature Rise 150 Connection Size 1/2 in Connection Type NPT