sump pit radon seal 2

https://mega-wiki.win/index.php/Why_a_Radon_Test_Retest_Matters_for_Your_York_County_Home

A sump pit radon seal is a specialized cover that fits over your sump pit to block radon gas from entering your home through that opening. It’s more than just a lid—it creates an airtight barrier that stops soil gases from seeping up through the pit and into your basement or crawlspace. When installed correctly, it helps reduce indoor radon levels by sealing off one of the major entry points. You’ll often see these used in homes with high radon readings, especially in areas with uranium-rich so…