COZY VC352AH Convection Gas Heater  Closed Front Console  LP  35 000 BtuH Input  24 500 BtuH Output Vent 4 In  Floor to Center of Vent 21 3/4 In  Equipped With Thermostat  Top Operated Controls  100 Percent Safety Pilot/Built in Pressure Regulator  Built in Draft Diverter  Side Access Door  Resettable Spill Switch  Piezo Ignition System  Agency Compliance CSA-US  Pipe Size Supply 1/2 In