Fuel Type Propane, Heating Method Gravity Convection, Heating Capacity Input 35,000 BtuH, Heating Capacity Output 23,700 BtuH, Ignition Type Matchless Piezo, Ignition Power Source Manual, Wall Type Single, Vent Type Top Vent, Overall Height 65 3/4 in, Overall Width 16 in, Overall Depth 6 in, Rough-In Height 66 1/8 in, Rough-In Width 14 3/8 in, Rough-In Depth 4 1/2 in, Gas Connection Size 1/2 in, Floor to Center of Vent 62 1/4 in, Heater Voltage 750 mV, Heating Area 875 sq ft, Housing Color White