QBT Technology - 50% Quieter than a standard propane heater | 60,000 BTU Propane Forced-air Heater" | Variable 30,000-60,000 BTU Output (Runs Up To 14 hrs on 20 lb. tank (low setting)) | Heats Up To 1,500 Sq.Ft. | Continuous ignition
250000 - 400000 BTU per hour | For use with propane gas. | Heats up to 10,000 square feet | Operates up to 17 hours on 2-100 lb. propane tanks - low setting. | Rugged; durable; steel construction; Heavy duty high output fan