24" x 12" Risers

The best just got better. You asked for it and now we have it. Polylok is proud to introduce our 1 foot tall by 24" riser. It has the same high quality as our 6" tall by 24" risers, but with fewer screws that you and your customers have to put together.  Structural ribs inside prevent frost from adhering to the riser in frost prone areas.

U.S. Patent No# 6,655,093; 6,454,491; 6,877,281

Similar Products

24" x 6" Risers

Like our 20" riser, we have combined all the best features of concrete and plastic risers to create our patented riser system. Our 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.

U.S. Patent No# 6,655,093; 6,688,072; 6,484,451; 6,877,281

24" Riser Pan

Provides a secondary concrete plug for additional safety.  Accepts additional 24'' Risers to bring to grade.

Goes Well With

Low Profile Basins, with Filter & Cover

Polylok’s new low profile external filter basin is ideal for those situations where space limitations are a factor.

Pre-Assembled Pump Basin

Tired of assembling your own pump basins? You don’t have to! Polylok now offers a pre-assembled pump basin that includes everything you need from the effluent pump to the heavy duty cover. This all inclusive unit comes ready to hook-up. It is made of high density polyethylene and is light weight, compact and ready for installation.

Riser Safety Screens

Polylok, Inc. is proud to offer our 12", 20" & 24" Safety Screens. These bright yellow, heavy-duty ABS screens act as a secondary layer of protection if the riser cover is unknowingly damaged or removed. The Riser Safety Screen fits in the upper most riser stack of our Polylok 12"x6", 20"x6", 20"x12" and 24"x6" risers and prevents entry into the tank. The Riser Safety Screen has been tested to 250 lbs. per sq. ft. and comes with a built in handle. For a better nights sleep, make this a part of your riser installation each and every time!

Adapter Rings

This is the only Adapter Ring on the market that accepts 20" or 24" risers. Our Adapter Ring is ideal for retrofitting existing septic tanks and can be secured with ease. Our Adapter Ring is made of virgin high density polyethylene.

Riser-to-Riser Adapters

Polylok's 20" & 24" Riser-to-Riser Adapter allows any other manufacturer's tanks, risers or corrugated pipe to be converted to Polylok's  Risers.  Simply screw or butyl our adapter onto the appropriate structure and that's it!  You can now use any 20" or 24" Polylok Riser.

Insulation for Polylok Covers

Our 20" and 24" covers meet an R-value of 10. We offer 20" covers, 24" covers and 24" Heavy Duty covers with or without insulation. Our insulation is easy to install and ships with the covers. Simply insert the pre-cut insulation into the cover, no extra steps.

Adapter Ring Kit

This kit will allow you to secure an adapter ring to an existing concrete tank to enable to addition of a Polylok riser or corrugated pipe to the tank. When installed properly, this will enable you to create a watertight connection. The kit contains 8 anchor bolts, 1 drill bit and a closed cell foam gasket.