20" & 24" Polylok Riser Adapter Ring
This is the only adapter ring on the market that accepts 20" or 24" Polylok risers. It is ideal for retrofitting existing septic tanks and can be secured with ease. Our adapter ring is made of virgin high density polyethylene.
1. Locate adapter ring over access opening on top of tank
2. Using a 1/4" masonry bit, drill 8 holes 1-1/4" deep on top of tank
3. Clean under surface of adapter ring apply foam gasket or butyl
4. Position adapter ring over opening, using 1/4" anchors, tap anchors into drilled holes and tighten with wrench
5. Position appropriate riser and or cover and screw onto the adapter ring to provide a watertight connection