Septic tank filter FTB

External Filter Basins (FTB) Orenco® External Filter Basins are used to retrofit an existing residential septic system with an effluent filter. They eliminate the need for costly and sometimes hazardous modifications to an existing septic tank with restrictive access openings or to unusable outlet baffles or tees. External Filter Basins include a basin, an 8-inch (203-mm) Orenco Effluent Filter, and a grade ring for attaching a section of riser pipe to the basin. 18-inch nominal diameter (450-mm DN) basin Ribbed PVC body Fiberglass reinforced polyester base 12-inch (305-mm) tall, 8-inch (203-mm) diameter, Orenco Effluent Filter included Extendable filter handle for easy removal 4-inch nominal diameter (100-mm DN) inlet and outlet openings Grade ring for 18-inch nominal diameter (450-mm DN) riser pipe included Adapter kit with grommet and 4-inch Type 3034 pipe adapter ordered separately (Product Code FTB3034KIT) 18-inch (450-mm) grade ring ordered separately (See “Grade Rings and Grade Ring Inserts” in this catalog) 18-inch (450-mm) fiberglass access lid ordered separately (see “Fiberglass Access Lids” in this catalog) Product Codes FTB1824-0812 — Filter basin, 18-inch nominal diameter (450-mm DN), 24-inch (610-mm) height, includes 12-inch (305-mm) tall, 8-inch (203-mm) diameter, Orenco effluent filter FTB3034KIT — Adapter kit with gasket for 4-inch (100-mm) Type 3034 pipe