30 inches wide x 51 inches long x 54 inches high - UL-2258 listed - Two in One double wall design - Primary internal tank is made of seamless blow molded polyethylene - Secondary tank is made of 19 gauge galvanized steel - All edges have sealant applied, then rolled to create leak proof seams- Both tanks are pressure tested during assembly - Four 2 inch top tappings - Large grip handles on each end - The tank comes with a detached saddle base that must be used at the time of installation - Each tank comes with a base, two 3 inch plastic adapters and two metal adapters - Optional rain cover (purchased seperately) must be used for outdoor installations