... piece molded, impact resistant,UV stabilized, fiberglass reinforced polyester,with inverted “U” slot that allows diffuser to nesttightly. ... ,UV stabilized, clear polycarbonate. It is securedin place with eight polycarbonate cam latches.Optional stainless steel latches are ... .Stainless steel latches should not be used inareas with high concentrations of chlorine.Polyurethane gasketing is poured ...