Rotationally molded, cross-linked polyethylene plastic.  Our fittings hold the highest O.D. and I.D. tolerances in the industry, ensuring you the highest level of input flow.  Machined aluminum 3/8" withdraw fitting has 360° rotational capability for hook-up convenience.  Conforms to all ABYC, NMMA and U.S.C.G. regulations.  Add 4.02" to tank height dimension to accommodate fill height.  49"L x 24.5"W x 11.9"H