Polylok 20"D x 2"H Riser | PL-RSR2002

20"D x 2"H POLYLOK RISER.

What it is

A septic tank riser extends the access opening of a buried tank or distribution box upward toward ground level.

This specific model:

• Diameter: 20 inches
• Height: 2 inches
• Material: High-density polyethylene (HDPE)
• Typical use: add small height increments when stacking risers on a septic tank access port.

Installers stack multiple rings (2", 6", 12", etc.) until the access lid sits at the desired height.

Why installers use it

Septic tanks are often buried 6-24 inches below grade. Without a riser, you must dig every time you pump or inspect the tank.

A riser system solves that problem.

Benefits:

• Brings the access lid to ground level for easy service.
• Creates a watertight and airtight access shaft.
• Lets technicians vacuum or water test the tank easily.
• Stacks with other Polylok components and lids.

Where it is used

Common locations in a septic system:

• septic tank manhole
• pump chamber
• distribution box
• inspection ports

The 20-inch diameter matches many modern septic tank openings and D-boxes.

Key design details

Typical features of Polylok risers:

• HDPE construction
  Strong, lightweight, corrosion resistant.
• Internal structural ribs
  Improve strength and reduce frost adhesion in cold climates.
• UV protection
  Allows lids and top sections to sit at grade.
• Modular stacking system
  Accepts Polylok 20-inch lids and other riser heights.

Shop online at BARR Plastics.