Heavy-duty construction, 2" x 2" 10-gauge formed steel angle posts, 9-gauge wire mesh doors and walls for venting, 14-gauge checker plate shelves and roof and padlock hasp for added security. Innovative door design allows for left or right opening installation. English and French warning labels included. Liquid Propane (35 Lb Cylinders). Constructed to meet or exceed strict CSA International B149.2-0 Propane Storage and Handling Code. Cylinders must be stored vertically at all times. 12 cylinders. 270 lbs. 44"W x 30"D x 74"H.