Portable Gas Tank-Top Heater Head Shape Round Number of Heads 2 Heating Capacity Output 30 000 BtuH Heating Area 500 sq ft Minimum Cylinder Size 20 lb Overall Height 15 1/2 in Overall Width 17 1/4 in Overall Depth 6 1/2 in Number of Heat Settings 3 For Use Indoors/Outdoors Outdoor Only Fuel Consumption 1.32 lb/hr Fuel Type Propane Heating Method Radiant Ignition Type Matchless Piezo