6" & 9" Square Pipe Grates

The 6” square grate is designed to fit 4” pipe while the 9" square grate is designed to fit 6" pipe. Just pop them into the pipe, and prevent critters, leaves, and many other small nuisances from going into your pipe. Fade resistant, available in black or green.

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3", 4" & 6" Round Grates

These round grates are designed to fit all pipe sizes with these diameters. They are manufactured in the United States using structural foam (HDPE). Ideal for residential or commercial applications.

4" Atrium Grate

Polylok's Atrium Grate is perfect for garden beds and other areas where floatable debris like mulch or leaves would clog.

Goes Well With

12" Round Drainage Boxes

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!

U.S. Patent No# 6,666,349 & 6,817,631

20" Round Drain Box

We have your solution to all of your drainage needs with our new 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 box 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!

U.S. Patent No# 6,666,349 & 6,817,631

Square Catch Basins

Offered in two sizes, Polylok manufactures the most versatile Catch Basin on the market. The basin comes complete with either a black or green grate, and two seals that accept 2", 3", 4", and corrugated pipe. You can choose your inlet and outlet heights, and it can accept one inlet and up to three outlets.

24" Round Catch Basin

Polylok’s 24” round catch basin consists of our 24” basin, 24” heavy duty grate, and four grommets. You can customize the basin’s height by using any 24” Polylok riser.