Check the listing for details. Polylok PL-68 Septic Tank Effluent Filter & Baffle Combo. Condition: New. Listed at 75.00 USD. POLYLOK PL-68 SEPTIC TANK EFFLUENT FILTER The PL-68 is much more than just an effluent filter. The housing can also be used as an inlet baffle (tee) or, with any 4" outlet septic tank filter. The housing is designed to accept Polylok's snap in gas deflector to deflect gas bubbles away from the tee and to keep the solids in the tank. The PL-68 is ideal for residential waste flows up to 800 GPD. Offers 68 linear feet of 1/16" filter slots, which significantly extends time between cleaningAccepts 3/4" PVC handleLocks in any 360° position when used with PL-68 TeePL-68 Housing can be used as an inlet or outlet teeGasket prevents bypass The PL-68 effluent filter will operate efficiently for several years under normal conditions before requiring cleaning. It is recommended that the filter be cleaned every time the tank is pumped or at least every three years. The filter can easily be cleaned by pulling the red filter insert out and hosing it off over the septic tank.