Description
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
- AS Pro Series 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, Recommend fastener: Masonry 3/16″ x 1-3/4″)
- Heights from 6″ up to 50″
- Durable Pipe is made of 100% Recycled HDPE
If you have questions about which size will work in your application or installation questions please let us know before you purchase. We’ll confirm the correct model is selected as ordering the wrong model can be unsatisfying and costly. Given the large nature of our products, returns are subject to a restocking fee.







