Keep the worksite warm with the Mr. Heater 80,000 BTU Liquid Propane Convection Heater. This portable heater requires no electricity to operate, using a 20-lb. propane cylinder to provide up to 80,000 BTU per hour. It has an instant locking chamber for easy assembly and a piezo push button ignition for safe and easy use. DESIGN Portable convection heater Operates up to 14 hours Piezo push button ignition Instant locking chamber for easy assembly Thermo-electric safety valve Uses 20 lb. propane cylinder SPECS: Weight: 17 lbs. Output: 30,000-80,000 BTU/hour Heating Area: 2000 sq ft. Runtime (Max BTU): 5.4 hours Runtime (Min BTU): 14 hours Additional Details Suitable for outdoor use only Includes 10-ft hose and regulator 1-Year Limited Manufacturer's Warranty Style: F270490Z