TOPP fiberglass basins, covers and accessories are made from premium materials and rigorously tested for use in wastewater, water treatment, sewage and sump systems. Our chop-hoop filament wound tanks and extensions are available in sizes ranging from 18″ to 120″ in diameter, with lengths customized to the depth of your wet well. A sealing kit is included for secure installation, and all covers fit perfectly without the need for additional accessories. Contact our factory to confirm the correct size for your project.
