Our Risers can be cast into concrete or used with the Polylok D-Box. They come...

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.

We have combined all the best features of concrete and plastic risers to create our...

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

The best just got better. You asked for it and now we have it. Polylok...

The best just got better. You asked for it and now we have it. Polylok is proud to introduce our 1 foot tall by 20" riser. It has the same high quality as our 6" tall by 20" risers, but with fewer screws that you and your customers have to put together.  Structural ribs inside prevent frost from adhering to the riser in frost prone areas.

Like our 20" riser, we have combined all the best features of concrete and plastic...

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

The best just got better. You asked for it and now we have it. Polylok...

The best just got better. You asked for it and now we have it. Polylok is proud to introduce our 1 foot tall by 24" riser. It has the same high quality as our 6" tall by 24" risers, but with fewer screws that you and your customers have to put together.  Structural ribs inside prevent frost from adhering to the riser in frost prone areas.

U.S. Patent No# 6,655,093; 6,454,491; 6,877,281

Our new 12” riser fits our 12" x 12" catch basin and 12" x 12"...

Our new 12” riser fits our 12" x 12" catch basin and 12" x 12" distribution box. They allow easy access to grade so that the boxes can be serviced or easily inspected. Unlike other boxes on the market our risers can be screwed together to maintain their integrity and create a watertight connection.