Clack Corporations new line of fiberglass reinforced plastic retention tanks are available in 120-, 80- and 40-gallon (454.25-, 302.83- and 151.42-liter) sizes. They are manufactured with a one-piece, black blow-molded liner reinforced with filament-wound fiberglass and epoxy. Features include a tank top in/out connection, a full one-inch (25.4-mm) blow down drain and a 360-degree swivel base and drain assembly. In/Out fitting kits are available for most types of plumbing connections. Optional bypass valve and top fill port are also available. http://www.clackcorp.com