Description The OPW CLC-33 FibreLite Tank Fiberglass Tank Sump Lid is now available on our Fiberglass Sump Models. Key Features Six latch cover design to ensure even sealing Holes in the lid to allow installation on 33" Fiberglass Polyethylene Tank Sumps Lid strength is three times stronger than our previous lid Retrofitable to existing OPW Polyethylene and Fiberglass Tank Sumps that have the Mechanically Fastened Lid.