Versatile and rugged, Bernzomatic Steel Propane Cylinders are perfect for everything from residential grills, outdoor heaters, fireplaces and mosquito traps, to commercial and industrial cookers and heaters. Engineered for safety, lightweight strength and durability, they feature a tough weather-resistant finish for extended use. Available in five sizes to meet a range of heating and cooking needs. Equipped with an Overfill Prevention Device (OPD). Empty tank must be filled before use.