Dranjer seals permit unrestricted flow of water into floor drains or
sump pits while sealing out the entry of mold spores, insects, radon and
other gases from the sub-slab floor area.
This drain works great for a sump cover. It has a brass ring that will create a
stronger seal if a radon mitigation system is installed in the sump cover.
Mounts
below the cover. A 2 3/4" hole is required.