THE LID, backwater basin cover, is a simple solution to seal your backwater valve basin.

This innovative technology by Radon Home Defence features a sealed lid barrier designed to proactively address an often-overlooked source of indoor pollutants: air quality.

THE LID mitigates radon and blocks other harmful soil gases, VOCs, and moisture from entering your home.

Enhance your indoor air quality while maintaining easy access for annual backflow valve maintenance.

✔️CAN/CGSB 149.11/149.12 COMPLIANT

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