|Dimensions||20 × 19 × 3 cm|
Allows you to easily monitor the sump barrel, without having to break the seal that is integral to your radon mitigation system.
Retrofit your sump cover to have a viewing port. 6” diameter x 1/4” thick acrylic disk, with pre-drilled holes and a gasket. Covers a hole up to 5” diameter. Includes three screws and instructions.