A handy accessory for homeowners and outdoorsmen alike, the Mr. Heater Little Buddy Propane Heater offers powerful heating performance in an extremely portable package. Designed to directly connect to and run off of standard 16.4 oz. disposable propane cylinders (not included), this heater helps you put 3800 BTUs of heating power where you need it. CSA certified for indoor use, this heater is great for garages, workshops, enclosed porches, and any other well-ventilated enclosure. The Buddy Heater also works in tents, fishing huts, and similar enclosures, making it a handy accessory for hunters and fishermen. Easy to use, the heater ignites with the push of a button. Oxygen depletion sensor notifies you of ventilation problems, while safety shutoff shuts the heater down if accidentally knocked over. Heats up to 100 sq. ft. Heats for approximately 5.5 hours on one cylinder. CSA Certified in the U.S. for outdoor or indoor use. CSA Certified in Canada for outdoor use only - Not for sale in Massachusetts. Manufacturer model #: MH4B. Powerful, yet portable, propane heater Uses, and fits directly onto, standard 16.4 oz. disposable propane cylinders (not included) 3800 BTUs of heating power heats up to 100 sq. ft. CSA certified for indoor use Push button ignition Oxygen depletion sensor Auto shutoff for accidental tip-over CSA Certified in the U.S. for outdoor or indoor use CSA Certified in Canada for outdoor use only - Not for sale in MassachusettsThe sale of all unvented liquid fired space heaters is restricted by law in the state of Massachusetts.