The Kargo Master Freon Tank Rack is designed to hold 3 x 30lb tanks or 1 x 50 Lb. tank on first level + 2 x Freon tanks. The Freon tank rack are built with heavy-duty 1/4″ steel bar and 3 tiers of 14 gauge metal shelf plates for superior structural integrity. Each tier is slightly tilted backward, allowing Freon tanks to be cradled securely inside the tank rack. Nylon straps are included to strap in and prevent the tanks from falling out.