Black Flat Sump Covers (21" - 28")
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Easy to install
Suitable for both indoor and outdoor
Black, Solid Flat Sump Cover. 1/4" polycarbonate
Please note that the listed size is for the desired sump basin the lid will be covering. The actual outer diameters are as follows:
| Listed Size | Actual Outer Diameter |
| 21" | 20 15/16" |
| 24" | 23 6/8" |
| 28" | 28" |
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About Radon
What is Radon?
Radon is a radioactive gas formed from the decay of uranium in soil and rock.
It moves from the ground into homes in enclosed spaces like basements.
Health Risks Associated with Radon
Radon is the second leading cause of lung cancer after smoking.
Radon exposure is typically asymptomatic, meaning there are no immediate signs of illness.
How to Mitigate Radon Exposure
After identifying radon issues with accurate testing, you need to install mitigation systems.
If you need help identifying the best system or risks, we'll help you for free.