The Mr. Heater TankFoot Tank Stabilizer reduces the risk of a propane cylinder tipping during transport or storage. Made with high-strength plastic construction, this lightweight stabilizer offers an excellent base for 20-, 30-, and 40-lb. cylinders. Ideal for RVs, pickups, cars, at a campsite, or any other situation in which your propane cylinder might tip over. Weight: 11 lbs. Fits 20-, 30-, & 40-lb. cylinders Ideal for RVs, pickups, cars, & more | Mr. Heater Black Tank Foot