50-200,000 BTU, Convection Style LP Heater, Projects Heat 360 Degrees, Knock Down Chamber Provides Easy Portability, Matchless Piezo Ignition, No Electricity Required, Heats Approximately 5,000 SQFT, Operates Up To 41 Hours On Single 100 LB Cylinder, Not Included, Perfect For Drywall, Painting & Concrete Curing, Ideal For Professional & DIY Construction Projects.