Portable Heater Direct Fired Dual Fuel Ductable 400 000 BtuH Output Heating Area 24 000 Sq. ft Fuel Rate 4.3 GPH LP 404 CFH NG Voltage 120 60 Hz 8 Amps AC Height 39 in Width 34 in Length 61 in 4120 CFM Cord Length 12 in 5-15 NEMA Plug Configuration Built-In Features Dual Fuel Wheels Lifting Hook Ductable Up To 50 Ft Safety Features Overheat Limit Air Switch Flame Sensor Meets ANSI Z83.7.A 2000 CSA