PCI fiberglass tank collars provide a rigid mounting connection between underground storage tanks and compatible tank sumps, helping create a stable, watertight secondary containment system.

Made from 100% corrosion-resistant fiberglass, our lineup includes the closed-mold CLS Series and legacy collar designs for multiple tank sizes and installation requirements. The CLS Series features factory-cut tank fitment, an integrated U-shaped epoxy trough, and a nestable design that simplifies shipping and storage. Legacy collars remain available upon request, including single-wall and double-wall configurations.