Although it came in a case with feet there is no way the exhaust will bend beneath it, also the air filter makes no sense either as the foam doesn't fill the cartridge. With that having been said it is still one the best valued things I've ever bought and at quite a reasonable price. it heats my 500 sq. ft. tiny home very well at a much cheaper cost than electric or firewood if I have to buy it. after 2 months of continuous use it has never failed.