Darlly Filter Cartridge Cross-Reference

Look up which Darlly cartridge or D.E. grid replaces yours. Search by Unicel, Pleatco (including the new ULTRA numbers), Filbur, OEM or Darlly part number, by filter make and model, or by size. The finder covers 640 Darlly part numbers, and every Unicel, Pleatco and Filbur number in it was checked against that brand's own catalog. Updated October 21, 2026.

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Cross-reference charts

Common pool and spa cartridges

Questions

How do I find the Darlly replacement for my filter cartridge?
Type the number printed on your old cartridge into the search box. Unicel, Pleatco, Filbur, Hayward, Pentair, Jandy, Waterway and other OEM numbers can be typed with or without dashes. You can also type the filter make and model (for example Hayward C4030) or the cartridge size (for example 7 x 26-1/16). When a Darlly cartridge matches, it is listed first; when nothing matches, the finder says so and suggests what to try next.
What happened to Pleatco part numbers like PA106 and PCC105?
In 2025 Pleatco replaced many cartridge numbers with ULTRA numbers. For example PA106 is now ULTRA-A1 and PCC105 is now ULTRA-A6. Search either number and the finder shows the Darlly cartridge that replaces both.
My filter takes four cartridges. What do I order?
Large pool filters such as the Hayward SwimClear C4030, Pentair Clean & Clear Plus 420 and Jandy CV460 hold four cartridges. Order the Darlly number four times. Results show how many cartridges a filter takes wherever a catalog gives the count.
How do I measure a filter cartridge?
Measure the outside diameter across the widest point and the length from end cap to end cap, not counting handles. Then note the end caps: an open hole (measure it), a closed end, a handle, or a thread (MPT or SAE). The measurement search matches within 1/8 inch on diameter and 1/4 inch on length.
Where can I buy Darlly filter cartridges?
Pool and spa businesses in Florida, Georgia, South Carolina, Alabama, Mississippi, Louisiana and Texas order through their Grit Game rep. Everywhere else, contact Darlly Filtration directly.
How was this cross-reference checked?
Every Unicel, Pleatco and Filbur number was checked against that brand's own catalog (Unicel's 2026 Replacement Guide, Pleatco's 2025 catalog and filbur.com) and against darllyfilter.com, including the cartridge size. Numbers a brand has retired show the number it sells now.
Where to buy Darlly cartridges
Pool and spa businesses in Florida, Georgia, South Carolina, Alabama, Mississippi, Louisiana and Texas order through their Grit Game rep. Everywhere else, contact Darlly Filtration directly.