The Dranjer™ model J-N6 is a complete floor drain designed to mitigate Radon entry in new construction or to retro-fit an existing large floor drain
Fits over a catch basin that is 5” or larger. This valve ships with its retaining ring designed to be set into poured concrete. It can also be used to retrofit by replacing the existing retaining ring with the ring provided with the product.
The cover plate is 6 inch diameter. The retaining ring is 7 inches.