The handy Portable Buddy Heater is loaded with features you'll appreciate. The handle folds for convenient storage. The tank connection swivels outward for easy LP cylinder and hose installation. The larger surface directs radiant heat over a wider area. A ceramic burner and porcelain-coated reflectors spread heat faster. An easy-start button sets at your choice of a 4,000- or 9,000-BTU output. This system automatically shuts off if oxygen falls below a safe level, or if the heater tips over. It uses a 1-lb. propane cylinder for three- to six-hours of heating time; or hook it up to a 20-lb. cylinder with an optional hose connector (cylinders and hose not included) for 48 to 110 hours of heat. Lightweight, portable design packs into even the most remote hunting, fishing and camping areas. Easy-to-use piezoelectric spark igniter. Dimensions: 15"H x 13.4"W x 7.7"D. Cannot be sold in Massachusetts.