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Wastewater Supply

Polylok - 20" Plastic 7-Hole Distribution Box w/ Grate Cover - 3017-207G-KIT

Polylok - 20" Plastic 7-Hole Distribution Box w/ Grate Cover - 3017-207G-KIT

Regular price $89.32 USD
Regular price Sale price $89.32 USD
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Shipping calculated at checkout.

This box is great for large applications such as golf courses but is also suitable 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, this box can also accept 6" pipe. Polylok's 20" Round Catch Basins will also accept Polylok 20" Risers, so you can easily bring the Drain Box to grade. It is the most versatile Drain Box available on the market today!


  • Includes Polylok 20" Grate Cover
  • Easy to install
  • Accepts risers to bring to grade
  • Accepts 6", 4", 3" & 2" pipe
  • Pipe can be installed at various heights
Installation Instructions:

1. Carefully cut out required opening in the box with a knife.
2. Install seal from INSIDE the box.
3. Screw on the nut from OUTSIDE the box.
4. Tighten to provide a watertight seal.
5. Remove the correct size tear out on the seal. TEAR OUT- DO NOT CUT OUT.
6. Slide the pipe into the seal.
7. Snap the stabilizing feet into the sockets at the base of the box. (12" only)

Special Instructions for Installing 4" Corrugated Pipe Only:

1. Remove the 4" TEAR OUT on the seal. TEAR OUT DO NOT CUT OUT.
2. Carefully cut between raised ribs on the back of seal in all 4 places.
3. Push corrugated pipe into seal.


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