Dynamic Series IV-DFM, DFML, Waterway 35 In-Line Compatible Filter Cartridge filter-width_10 5/16 inches This is a pair of

This is a pair of Rocky Roller four inch castors for replacement on their commercial solar reels

They will not over-stabilize the pool and they will not cause a reduction of ORP

While the old-style ratchet system is cumbersome and bulky

If an area of the swimming pool is closed or restricted for a particular reason

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

Dynamic Series IV-DFM, DFML, Waterway 35 In-Line Compatible Filter Cartridge filter-width_10 5/16 inches This is a pair ofThe 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