This Mr. Heater 9,000 BTU propane hose assembly F273701 connects appliances designed for disposable propane cylinders to a 20-pound cylinder. It is one of Mr. Heater"s most popular hoses and can be paired with the Portable Buddy and Heater-Cooker, which provide safe, portable heat indoors. This propane hose has a hand-tightened swivel on both ends and measures 5 feet long. It is backed by a 1-year limited manufacturer"s warranty.