TW Risers by Infiltrator
Septic Tank Riser and Lid Systems
TW-Risers by Infiltrator are made from glass reinforced polypropylene, providing superior strength and durability. They come in green or black with a 24” diameter making them ideal for use with any concrete or plastic tank. The slip resistant lids are fastened using stainless steel screws and are further secured by indexing structural ribs which lock the riser into place.