Soleno 1UCVRADON Radon Sump Basin Cover, HDPE, For: 18 x 24 in Radon Sump Basin

Made of high-density polyethylene (HDPE), the lid is used to cover the radon sump basin, to reduce pump noise and to prevent debris from falling into the pit. This airtight lid also ensures that there is no build-up of humid air in buildings.