Corrugated Wall Basins

Tapered Wall Sump Basins

The unique “TOPP Twist Lock” cover design simplifies every installation. Simply place the cover in position and twist for a tight and secure fit.

There are three cover options for this product - our Solid "TOPP-Lock," Slotted "TOPP-Lock," or our Radon Gas-Tite Steel Cover. All "TOPP-Lock covers are proven to reduce installation and maintenance cost and are manufactured with the same high quality polyethylene used throughout our line and assures years of quality performance.

Straight Wall Basins

Each Corrugated Straight Wall Polyethylene Basin is corrosion resistant. A unique property of the TOPP Corrugated Straight Wall Polyethylene Basin is its ability for providing duality of use, that of accommodating pedestal or submersible pumps. Up to 4 inlets can be employed without any modifications. By virtue of its design the TOPP Corrugated Straight Wall Polyethylene Series is perfect for those applications requiring increased strength and extra long-term reliability.