Polylok 183008HD Heavy Duty Riser Cover 18 Inch

Product Description

The POLYLOK 183008HD is a heavy-duty cover designed for use with septic tank risers. It provides a secure, load-bearing lid solution for riser openings in residential and light commercial septic systems. The 183008HD carries a heavy-duty rating, making it suitable for installations where the cover may be subject to surface traffic or increased load demands. Licensed septic system installers and service technicians are the primary trades that specify and install this cover. Its size designation of 18 corresponds to 18-inch riser openings, a common dimension in septic riser systems.

This cover is intended for use on septic tank riser assemblies in residential and light commercial applications. It is commonly installed as part of a new septic system build or as a replacement lid on an existing 18-inch riser system. The heavy-duty construction makes it appropriate for installations near driveways, yards, or other areas where surface loads may be a consideration. Septic system contractors and plumbers typically specify this cover when an upgrade from a standard cover is required.

Key Features

• Heavy-duty cover rated for increased load demands versus standard covers
• Fits 18-inch septic tank riser openings
• Sold as a single unit
• Model 3008-HD designation for direct cross-reference ordering

Compatibility

Designed as an OEM-style replacement or new-installation cover for 18-inch septic tank riser systems. Confirm riser diameter and brand compatibility before installation.

Installation Notes

Installation is typically performed by a licensed septic system contractor or plumber. Before servicing a septic riser or cover, ensure the area is properly ventilated and follow all local and state wastewater system codes. Verify the riser opening diameter matches the 18-inch size designation prior to installation. Do not overtighten or force-fit covers, as improper seating can compromise the seal.