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Polylok 24'' x 2'' Septic Tank Grade Riser

The Polylok 24" x 2" Septic Tank Grade Riser (Model 3008-GR2) is the perfect low-profile solution for fine-tuning your septic tank access to exact finished grade level. When you need just a couple of inches to bring the lid flush or slightly above ground—without excess height—this 2" tall riser delivers precision and reliability.

Crafted from durable high-density polyethylene (HDPE), this grade riser shares the same trusted Polylok quality as taller sections but in a slim 2" profile. It's ideal for final adjustments in the "Build-a-24" Riser Kit system, allowing you to stack it with 6", 12", or other compatible risers for custom heights.

The safety screen (#3008-SS) will not attach directly to this item.

POLYLOK RISERS NO LONGER COME WITH A FACTORY INSTALLED GASKET. We recommend using our butyl sealant tape to create a seal between risers.

In Stock

$59.00MSRP: $69.00

Item #:3008-GR2

Manufacturer: Polylok

Product Documents

3008-GR2_Specifications

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Polylok 24" Heavy Duty Septic Tank Riser Lid

Item #:3008-WEST

Our Price: $80.00MSRP: $95.00

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Ship Date Mon, Mar 2

Delivery: 1-4 Business Days

Key Features and Benefits

Ultra-Low 2" Height — Specifically designed as a "grade riser" for systems needing minimal extension to reach perfect grade level—eliminates awkward protrusions or depressions in your lawn.
Stackable Compatibility — Locks securely onto other Polylok 24" risers or adapter rings; stack multiple units (including taller ones) for flexible, exact-height builds.
Secure Connection — Snaps/locks into place and fastens with included stainless steel screws for a stable, long-lasting joint.
Watertight and Airtight Design — Supports vacuum or water testing of the septic tank; use butyl sealant tape (recommended) between sections for optimal sealing (note: risers no longer include factory gaskets as standard—add sealant for best results).
Heavy-Duty Strength — Reinforced with structural ribs for rigidity; handles pedestrian traffic and even light equipment like lawn mowers or small garden tractors when properly installed and backfilled.
Superior UV Resistance — Highest UV protection available to resist fading, cracking, or degradation from prolonged sun exposure.
Lightweight & Easy Install — Much simpler to transport and handle than concrete risers, reducing labor time and effort.
Made in the USA — Patented Polylok design from a leader in onsite wastewater solutions.

Specifications

Diameter: 24 inches
Height: 2 inches
Material: High-density polyethylene (HDPE)
Color: Green
Compatibility: Fits Polylok 24" risers and adapter rings (#3009-AR square or #3009-RTR24 round). Not directly compatible with other brands without adapters.
Included: Riser section + stainless steel attachment screws

Important Note: The Polylok safety screen (#3008-SS) does not attach directly to this 2" grade riser—use on taller sections or lids as needed.

Easy Installation

Secure the base to a compatible Polylok adapter ring on the tank lid.
Stack and align the 2" grade riser (or combine with other heights) for precise grade matching.
Fasten each connection with provided stainless steel screws using an alternating pattern for even pressure.
Apply butyl sealant rope/tape between joints for a reliable, watertight seal.
Finish with a Polylok 24" riser lid (sold separately) and backfill evenly to avoid lateral stress.

This low-profile riser is excellent for retrofits, new installs, or any setup where exact grade alignment matters—say goodbye to uneven mounds or sunken lids!