Do you have an existing riser that needs to be extended? Use our simple extension kits to raise the height of your current riser.
- Includes Butyl Sealant, Hardware, Corrugated Pipe, Connector Flange, & Safety Barrier
- Fits new ADS 24″ (23.5″) and old ADS 24″ inside diameter double wall corrugated pipe
- Fits 24″ inside diameter concrete risers
- Heights from 6″ up to 18″ available (contact us for custom applications >18″)
- Made of 100% Recycled HDPE
- Note: Masonry fasteners not included with kit
Installation Guide Download