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
- Premium low profile cover available for purchase separately.
- Adapts to 24″ ID double wall corrugated pipe
- Adapts to 24″ inside diameter concrete risers (Masonry fasteners not included with kit, see install guide for required spec)
- Heights from 6″ up to 18″ available (contact us for custom applications >18″)
- Made of 100% Recycled HDPE
Installation Guide Download