Polylok, Incorporated

12` Round Drainage Boxes

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The Polylok Drainage Boxes is the most versatile box on the market today. You can choose what height drainage boxes you want your inlets and outlets to be. It also comes complete with the only seal of drainage boxes in the market that accepts 2'', 3'',4'' and corrugated pipe. No more different fittings to inventory!

  • Use as Rain Drain, D-Box, or Drop Box; allows for all configurations
  • Use as a rain drain for gutters, driveways & sub surface drainage
  • Use as a distribution box or drop box for onsite septic systems
  • Use with the 12'' riser to bring cover or grate to grade as needed
  • Accepts 2'', 3'', 4'' and corrugated pipe
  • Use with solid cover or grate, your choice, no additional cost
  • Four stabilizing feet with every box

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 back of seal in all 4 places.

    3. Push corrugated pipe into seal.

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