12" x 6" Risers

Our Risers can be cast into concrete or used with the Polylok D-Box. They come with a flat cover, galvanized steel grate, plastic grate, or with an inspection port. All of our risers have structural ribs on the inside preventing frost from adhering in frost prone areas. Polylok's Risers are the only risers on the market to offer this unique feature.

Similar Products

20" x 6" Risers

We have combined all the best features of concrete and plastic risers to create our patented riser system. Our risers hold their shape, are stackable, screw together, and are water and airtight. Structural ribs inside prevent frost from adhering to the riser in frost prone areas.

U.S. Patent No# 6,655,093; 6,688,072; 6,484,451; 6,877,28

24" x 6" Risers

Like our 20" riser, we have combined all the best features of concrete and plastic risers to create our patented riser system. Our risers hold their shape, are stackable, screw together, and are water and airtight. Structural ribs inside prevent frost from adhering to the riser in frost prone areas.

U.S. Patent No# 6,655,093; 6,688,072; 6,484,451; 6,877,281

Goes Well With

Seals for 12" & 20" D-Boxes

Our D-Box seals are the only true watertight seals on the market today. Our 4'' seal fits in both our 12'' and 20'' plastic D-Box. It accepts 2'', 3'', 4'' and corrugated pipe. Our 6'' seal works in our 20'' plastic D-Box. No other seals can do so much!

12" Distribution Boxes

The Polylok Distribution Box is the most versatile box on the market today. You can choose what height of distribution boxes you want your inlets and outlet slotted filters to be. It also comes compete with the only seal on the market of distribution boxes that accepts 2”, 3”, 4” and corrugated pipe. No more different fittings in distribution boxes to inventory! It also comes with stabilizing feet to anchor the box.