- Make sure this fits by entering your model number.
- Hold their shape and are stackable
- Structural ribs inside prevent frost from adhering to the riser in the frost prone areas
- Screw together assembly; Water and air tight
- Lid, grate and basin sold separately
- Made in the USA
This fits your .
6″ Riser for 20″ StormDrain Drain Box / Catch Basin Part No. FSD-3009 Dimensions: 22.8″l x 22.8″w x 7.3″h This distribution box riser combines all the best features of concrete and plastic risers to create our patented riser system. Features: -Hold their shape -Stackable -Screw together assembly -Water and air tight Structural ribs inside prevent frost from adhering to the riser in the frost prone areas.