- Watertight and airtight
- Allows septic tank to be easily vacuum or water tested
- Tear off riser ring if frost is a problem
- Easy to bring septic access to grade
- Made of High Density Polyethylene
- Highest UV protection on the market today
- Structural ribs inside prevent frost from adhering to the riser in frost prone areas
- Makes riser stack stronger
- Accepts Polylok riser covers or grates
20″ X 2″ Riser
Polylok’s 20″x2″ risers are a great solution for systems needing only a few inches to come to grade.
24″ X 2″ Riser
These 24″x2″ risers are also a great solution for systems needing only a few inches to come to grade.
20″ X 6″ Riser
These risers hold their shape, are stackable, screw together, and are water and airtight. Structural ribs inside prevent frost from adhering to the riser in frost prone areas.
24″ X 6″ Riser
Like their 20″ riser, they have combined all the best features of concrete and plastic risers to create their patented riser system.
20″ X 12″ Riser
Polylok introduced their 1 foot tall by 20″ riser. It has the same high quality as our 6″ tall by 20″ risers, but with fewer screws.
24″ X 12″ Riser
Polylok’s 24″x12″ risers can be stacked on top of each other. There are screw holes on the inside of the riser to attach it to a Polylok adapter ring, or another Polylok riser.