This is a Comfort Glow vent-free propane gas heater. Made in the U.S.A. I bought this many years ago and used it for about two weeks during a cold winter as I worked in my garage. It has only been used for those two weeks, never to be lite again. This has never seen the light of day. It has been stored away in my garage. I have the owners manual. There is also about 15 feet or so of propane line with the exact correct fittings on either end. You can screw the regulator into a 5 gallon propane bottle or a 500 gallon tank. This unit is either wall mount or floor stand. It has NO dents or scratches. I have tried to wipe down all the cobwebs. I personally guarantee this runs or your money back. My word on it. Make offer. I don’t need the money, just cleaning out the garage so be reasonable.