---
product_id: 81587163
title: "Polylok 20\" x 12\" Septic Tank Riser"
brand: "polylok"
price: "$319.01"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.us/products/81587163-polylok-20-x-12-septic-tank-riser
store_origin: US
region: United States of America
---

# High Density Polyethylene 20" Diameter Frost Resistant Polylok 20" x 12" Septic Tank Riser

**Brand:** polylok
**Price:** $319.01
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Septic Game!

## Quick Answers

- **What is this?** Polylok 20" x 12" Septic Tank Riser by polylok
- **How much does it cost?** $319.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/81587163-polylok-20-x-12-septic-tank-riser)

## Best For

- polylok enthusiasts

## Why This Product

- Trusted polylok brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Compatible with Polylok 20" Riser Safety Screens for added security.
- • **Built to Last:** Crafted from high-density polyethylene, ensuring durability and resistance to shattering.
- • **Frost Fighter:** Structural ribs designed to prevent frost adherence, perfect for cold climates.
- • **Easy Installation:** Lightweight at just 8 pounds, making setup a breeze.
- • **Proudly Made in the USA:** Support local manufacturing with this quality product.

## Overview

The Polylok 20" x 12" Septic Tank Riser is a robust and reliable solution for septic systems, made from high-density polyethylene to withstand the elements. With its innovative design featuring structural ribs to combat frost, this riser is perfect for any climate. Proudly made in the USA, it’s lightweight and easy to install, ensuring you can enhance your septic system with confidence.

## Description

Polylok20" x 12" Septic Tank Riser

## Features

- This model has been replaced with part number: 3009-R12-NG as of 2021
- Accepts Polylok 20" Riser Safety Screens
- Made of high density polyethylene which won’t shatter
- Structural ribs inside prevent frost from adhering to the riser in frost prone areas
- Made in the USA
- Riser gasket sold separate (Part Number: 3009-HR)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Polylok, Inc. |
| Part Number | 3009-R12 |
| Item Weight | 8 pounds |
| Product Dimensions | 14 x 14 x 56 inches |
| Item model number | 3009-R12 (20" x 12" Risers) |
| Is Discontinued By Manufacturer | No |
| Size | 20" diameter 12" Tall |
| Color | Green |
| Material | High Density Polyethylene |
| Shape | Circular |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Polylok 20" x 12" Septic Tank Riser - Image 1](https://m.media-amazon.com/images/I/51Phdw3MOGL.jpg)

## Questions & Answers

**Q: what size stainless steel  screws should be used to stack up  the polylok septic tank risers?**
A: It comes with screws and I believe they are 1 1/2"

**Q: Does this come with the lid and base as pictures show? Some vendors use deceptive pictures, asking for clarity.**
A: Yes it was fairly easy to install over our aged system

**Q: Can i use my current metal lid on this?**
A: I don't know but probably doubtful

**Q: I have a norwesco 2500 gal water tank and want to add this to the 20" access opening.....will this work ????  Do I have to seal it ???**
A: Should work but I don't know for sure; they have other models that have a square at the bottom that would work for sure; yes you would have to seal it or ground water will leak in

## Customer Reviews

### ⭐⭐⭐⭐⭐ Septic tank riser
*by T***G on February 17, 2025*

Does exactly what it’s designed to do. Installation was straight forward and able to be done with basic hand tools.

### ⭐⭐⭐⭐⭐ Worked great for a non-standard purpose
*by M***S on March 29, 2017*

It's difficult to "love" a septic tank riser, but that said, this did exactly what I needed. Project was actually a repair to a sump pump. The 20-in diameter concrete sump had been buried 18-in below ground and then stupidly bricked over by the previous home owner. So when the pump eventually failed, we had to jackhammer it open for access and repair. I wanted to extend the sump to ground level and have a lid. I used these PolyLock risers and a lid to extend the 20-in diameter concrete sump pipe level to the surface (BTW, I tried getting just 18-in of the concrete pipe, but it is sold in minimum 10-ft lengths that would need a small crane to move). Anyway, project came out great.

### ⭐⭐⭐⭐⭐ 12 inch tall risers
*by J***Y on May 16, 2019*

Wow; received these in 2 days after ordering. Risers are well built and already have a gasket installed on the bottom. Very easy to install. These came with 6 stainless steel screws for each riser ; however they are Phillip head screws; square head screws would have made install a little easier; All in all ; I am very happy with the risers; took less than 10 minutes to install . Thanks for a great product.

## Frequently Bought Together

- Polylok 20" x 12" Septic Tank Riser
- Polylok 20" Septic Tank Cover/Lid (PN: 3009-RC)
- Polylok 20" / 24" Septic Tank Riser Adapter Ring (PN: 3009-AR)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-07*