Carbon Replacement for 4″ Polylok PolyAir Vent admin on November 20, 2020 SKU: TRE 03650 Category: Waste Water Treatment Systems Order Now: 780-438-2485 Contact Us Additional information Literature Additional information Brands Polylok Check Out These Other Products FujiMAC Blowers Read more Halliday Products Series L1E Ladder Extension Conery Base Elbow Rail Systems Read more Sim/Tech STF-1 STEP24x1-SDR35 Pleated Filter Post navigation Previous: Previous post: Biomicrobics MicroFAST PanelNext: Next post: 1-1/4″ x 1″ – Stainless Steel Submersible Check Valve