Dynamic Series IV-DFM, DFML, Waterway 35 In-Line Compatible Filter Cartridge filter-width_10 5/16 inches Choose from the following: 1/2

Choose from the following: 1/2 inch (Item DF-SF117)

This is a Hayward ECX1009 1/2 inch Bump Shaft for Perflex EC30

(1) Locking Ring

Includes face plate

Dynamic Series IV-DFM, DFML, Waterway 35 In-Line Compatible Filter Cartridge filter-width_10 5/16 inches Choose from the following: 1/2The Hurricane HF4335 01 Cartridge Filter is compatible Dynamic Series IV DFM, DFML, Waterway 35 In Line, Guardian 409 219, and 03FIL1300, 17 2482, 25393, 303557, 817 3501, R173431 and other compatible models. It is identical to Pleatco PRB35 IN, Unicel C 4335, and Filbur FC 2385 filter cartridges. The original manufacturer's names and part numbers are for reference only. Hurricane's advanced point bond filter media has tighter filtration capabilities