This is a replacement Pentair Bottom Locking Flange; Outer Diameter: 7-1/8 Inch Top x 8-1/8 Inch Bottom; Inner Diameter: 6-3/4 Inch.
This item is typically used with the Dynamic Series IV Filter Model DFML25C; DFML25; DFML35; DFML50 and Dynamic Series II & III Filter Model RTL/RCF
