Mr. Heater Buddy 4,000-9,000-BTU Indoor-Safe Portable Propane Radiant Heater - Green

Emits 4,000 or 9,000 BTU/hr radiant heat | Designed and approved for indoor and outdoor use | Heats up to approximately 225 square feet | Features emergency low oxygen safety system | 2 temperature settings: low and high | Runs 5.4 hours on low and 2.4 hours on high with 1 lb propane cylinder | Constructed with self-extinguishing materials | The use of un-authorized accessories/attachments with this heater are expressly prohibited, may cause serious injury, and will void the warranty.