Polylok 20" Heavy Duty Riser Lid

The Polylok 20" Heavy Duty Riser Lid (Model 3017-C20) is the reinforced, flat-top cover engineered for demanding applications in your Polylok 20" riser or distribution box system. Unlike the standard lid with recessed handles, this heavy-duty version features a completely flat design with enhanced reinforcement—ideal for below-grade installations, high foot traffic areas, or locations subject to occasional light vehicle loads like riding lawn mowers or small garden tractors.

Constructed from durable high-density polyethylene (HDPE) with the highest UV protection available, this lid withstands harsh outdoor conditions, resisting fading, cracking, and degradation over time.

In Stock

$65.00MSRP: $75.00

Item #:3017-C20

Manufacturer:Polylok

Key Features and Benefits

Flat, Heavy-Duty Design — No protruding handles for a low-profile, flush finish; reinforced structure provides superior strength for high-traffic or buried setups.
Skid-Resistant Surface — Improves traction and safety in wet, grassy, or frequently walked areas.
Factory-Installed Gasket — Ensures a reliable airtight and watertight seal straight from the package—no extra sealant required (butyl tape can be added for extreme conditions).
Secure Fastening — Includes stainless steel screws to lock the lid firmly in place, deterring tampering or accidental removal.
Enhanced Load Capacity — Rated for 1,000 lbs; passed static load testing to 4,000 lbs—significantly higher than the standard lid's 500 lbs rating, making it suitable for areas with greater weight exposure.
Premium UV & Weather Resistance — Top-level protection maintains integrity in all climates.
Lightweight Yet Tough — Easier to handle than concrete lids while delivering heavy-duty performance and longevity.
Made in the USA — Trusted Polylok quality from a leader in septic and onsite wastewater solutions.

Note: This heavy-duty flat lid lacks handles, so removal may require tools (e.g., a pry bar or screwdriver) compared to the standard PL-20RC lid with recessed handles for easier access. Use this model when maximum strength and a flush profile are priorities over quick manual removal.

Specifications

Diameter: 20 inches
Material: High-density polyethylene (HDPE)
Color: Green
Load Rating: 1,000 lbs rated; static tested to 4,000 lbs
Compatibility: Fits exclusively Polylok 20" risers (including 2", 6", 12" sections) and Polylok adapter rings (#3009-AR square or #3009-RTR20 round). Also compatible with Polylok 6-Hole (#3017-6H) and 8-Hole (#3017-8H) distribution boxes. Not compatible with other brands without adapters.
Included: Factory-installed gasket, installation screws (stainless steel)