Meet all relevant NFPA and OSHA standards for storing dangerous and flammable materials. Made of heavy-gauge, expanded metal. Heavy-duty butt hinges and padlock hasp. Magnetic catch keeps door shut when not locked. Vertical storage lockers accept all standard vertical cylinders up to 59¾" or 65". Feature adjustable chains for securing vertical cylinders, adjust in 1" increments. Horizontal cylinder storage lockers accommodate 20 and 33½" lb. LPG cylinders and canisters. 1½"× " angle steel frame 14-ga. steel top 14-ga. Expanded metal Predrilled holes allow anchor to floor