This RV Heater bag is designed to transport and store your 18B along with two disposable propane cylinders, hose, and filter with room to spare. A rugged and convenient U-shaped zipper ensures that you will have easy access to your items whenever you need them. The padded strap makes carrying the bag comfortable and the added front and rear storage zippers give you plenty of room to store the gear you need to take with you on your next adventure.