This is the only adapter ring on the market that accepts 20" or 24" Polylok risers. Polylok adapter ring is ideal for retrofitting existing septic tanks, and can be secured with ease. Made of virgin high density polyethylene.
Polylok part number: 3009-AR
Need risers for your septic system?
Make sure you read our guide on how to properly install Polylok risers to know what to do next.