Our 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.
Product Features
- Easy to install
- Light weight
- Can be screwed together
- Fits both Polylok 12" x 12" catch basin and 12" x 12" distribution box