What is the Darlly replacement for Unicel C-7404?

Darlly 70351 replaces Unicel C-7404. Both are 7" in diameter and about 9-13/16" long.

What size is Darlly 70351?

Darlly 70351 is 7" in outside diameter and 9-13/16" long, with 35 sq ft of filter area.

Darlly 70351 Filter Cartridge

Replaces Unicel C-7404

Darlly 70351 is a 35 sq ft filter cartridge, 7" x 9-13/16". It replaces Unicel C-7404.

Specifications

Darlly part number	70351
Outside diameter	7"
Length	9-13/16"
Top end cap	injection molded knob Handle
Bottom end cap	injection molded cone adapter
Filter area	35 sq ft
Darlly description	Baker-Hydro HM-35

Cross-reference

Brand	Part numbers Darlly 70351 replaces
Unicel	C-7404

Older or other numbers that also point to this cartridge (not confirmed by a second source): PBH-UM35 (Pleatco), FC-0750 (Filbur).

Other Darlly cartridges the same size

Same diameter and length. Check the end caps and area before swapping.

Darlly 7025125 sq ft · Hayward Star-Clear C250 Darlly 7025225 sq ft · American, Swimquip, Premier Darlly 7025325 sq ft · Baker-Hydro HM-25 Darlly 7025425 sq ft · top load Darlly 7025625 sq ft · American, Swimquip, Premier Darlly 7035235 sq ft · American, Swimquip, Premier Darlly 7051050 sq ft · Aquasports

Questions

What is the Darlly replacement for Unicel C-7404?: Darlly 70351 replaces Unicel C-7404. Both are 7" in diameter and about 9-13/16" long.
What size is Darlly 70351?: Darlly 70351 is 7" in outside diameter and 9-13/16" long, with 35 sq ft of filter area.

Where to buy Darlly 70351

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.

Find your Grit Game rep Contact Darlly Darlly 70351 on darllyfilter.com

Cross-reference checked October 21, 2026 against Unicel's 2026 Replacement Guide, Pleatco's catalog (updated September 2025), filbur.com and darllyfilter.com. A competitor number is listed only when that brand's own data pairs it with the same cartridge size. Always compare the size and end caps of your old cartridge before ordering.

Brand names and part numbers are trademarks of their respective owners and are shown only to identify compatible replacements. Darlly Filtration is not affiliated with or endorsed by them. Cross-reference by The Grit Game, Darlly's sales agency.