
The Automated Flow Systems (AFS) PVC Ultra-RibTM tank access risers provide access to septic tank openings. Constructed of ribbed PVC pipe, they are available in the following 21 and 24 in. diameters.
Automated Flow Systems PVC Ribbed Riser Product Information

Download Ultra-Rib TM Product Information Sheet
Download Ultra-Rib TM Product Data Form
Download Orenco Systems, Inc. Ultra-Rib TM Technical Data Sheet - NTD-RLA-RR-2