20" Cover for Riser and D-Box

Ideal for use with 20” Risers and Distribution Boxes. Our 20” covers are made of HDPE with the highest UV Protection on the market today. These covers will withstand normal residential and light commercial traffic.

Features

  • Skid resistance surface
  • Available in green
  • Highest level of UV Protection included
  • Includes two recessed handles for easy removal
  • Comes with a foam gasket for airtight and watertight applications
  • Square drive screws are available to discourage unauthorized entry

Part Number

  • 3017-C20 (20" Riser and D-Box Cover)

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Ideal for use with our risers and drain boxes, these 20” grates are made of HDPE with the highest UV Protection on the market today. These grates will withstand normal residential and light commercial traffic.

20" Riser Cover

Ideal for use with 20” Risers. Our 20” covers are made of HDPE with the highest UV Protection on the market today. These covers will withstand normal residential traffic.

Goes Well With

20" Distribution and Valve Box (8 Hole,7 Hole, 6 Hole)

We have the solution to all of your drainage needs with our 20” Drain, Valve, & Meter Box! This box is great for large applications such as golf courses but is also a suitable size for the home. There’s no need to worry about different colored fittings or plugs to inventory because as well as accepting 2”, 3” & 4” pipe, our equal flow distribution boxes can also accept 6” pipe. Our 20” Drain Box will also accept our 20” Risers so you can easily bring the Drain Box to grade. It is the most versatile Drain Box available on the market today!

Riser Safety Screens

Polylok, Inc. is proud to offer our 12", 20" & 24" Safety Screens. These bright yellow, heavy-duty ABS screens act as a secondary layer of protection if the riser cover is unknowingly damaged or removed. The Riser Safety Screen fits in the upper most riser stack of our Polylok 12"x6", 20"x6", 20"x12" and 24"x6" risers and prevents entry into the tank. The Riser Safety Screen has been tested to 250 lbs. per sq. ft. and comes with a built in handle. For a better nights sleep, make this a part of your riser installation each and every time!

Adapter Rings

This is the only Adapter Ring on the market that accepts 20" or 24" risers. Our Adapter Ring is ideal for retrofitting existing septic tanks and can be secured with ease. Our Adapter Ring is made of virgin high density polyethylene.

Insulation for Polylok Covers

Our 20" and 24" covers meet an R-value of 10. We offer 20" covers, 24" covers and 24" Heavy Duty covers with or without insulation. Our insulation is easy to install and ships with the covers. Simply insert the pre-cut insulation into the cover, no extra steps.

Adapter Ring Kit

This kit will allow you to secure an adapter ring to an existing concrete tank to enable to addition of a Polylok riser or corrugated pipe to the tank. When installed properly, this will enable you to create a watertight connection. The kit contains 8 anchor bolts, 1 drill bit and a closed cell foam gasket.