Polylok 3017-207 20 Inch Round Distribution Box 7 Hole

Product Description

The POLYLOK 3017-207 is a 20-inch round septic distribution box designed to evenly distribute effluent flow across multiple leach field lines. Built for flexibility, it accepts 2-inch, 3-inch, 4-inch, and 6-inch pipe, eliminating the need for multiple fitting types on a single job. The 7-hole configuration provides a wide range of inlet and outlet placement options. It ships with a flat cover and is compatible with 20-inch risers for straightforward grade adjustment. Licensed septic installers and plumbers rely on this D-box for both new construction and replacement installs.

This distribution box suits residential and light commercial septic systems where equal flow distribution to leach lines is required. The flexible inlet and outlet positioning makes it adaptable to varied site layouts without requiring additional hardware. Compatibility with 20-inch POLYLOK risers means grade adjustment is handled within the same product system. It works equally well in small single-line systems and larger multi-line leach field configurations.

Key Features

• 7-hole design allows flexible inlet and outlet placement
• Accepts 2-inch, 3-inch, 4-inch, and 6-inch pipe for multi-size compatibility
• 20-inch round form factor with included flat cover
• Compatible with 20-inch POLYLOK risers for grade adjustment
• Equal flow distribution to multiple leach field lines

Compatibility

Designed for use with 20-inch POLYLOK risers. Accepts 2-inch, 3-inch, 4-inch, and 6-inch pipe fittings. Intended as a distribution box for residential and light commercial gravity-fed septic leach field systems.

Installation Notes

Installation should be performed by a licensed septic installer or plumber in accordance with local health department regulations and applicable plumbing codes. Ensure the box is set level to maintain equal flow distribution across all active outlet lines. Unused ports must be properly plugged before backfilling. Verify that the cover is fully seated before completing burial to prevent soil infiltration.

Technical Specifications

• Diameter: 20 inches
• Shape: Round
• Number of Holes: 7
• Accepted Pipe Sizes: 2 inches, 3 inches, 4 inches, 6 inches
• Cover Type: Flat

Standard Information

• Brand: POLYLOK
• Manufacturer Part Number: 3017-207