Septic tank prefilter EF-4

800 GPD 86 ft. of 1/16" Filtration The EF-4 series filters remove solids down to 1/16" and greatly extend the life of the septic system. Shown at the left is the EF-4 Combo which includes the 4" standard length (14" rise) T-Baffle™, the EF-4 Filter, and the B4035 bushing for reducing the outlet from Sch. 40 to SDR35 pipe. The SD-4 Solids Deflector is optional. Also available is the new EF-4-18 which is the same except has an 18" rise (see below). The Filter and the T-Baffle are NSF Standard 46 rated. The filter is rated at 800 GPD. The EF-4 Series is protected by U.S. Pat. Nos. 6,319,403; D,431,629; and other Patents Pending.