What is the Darlly replacement for Unicel C-7405?

Darlly 70502 replaces Unicel C-7405. Both are 7" in diameter and about 14-3/4" long.

What size is Darlly 70502?

Darlly 70502 is 7" in outside diameter and 14-3/4" long, with 50 sq ft of filter area.

Darlly 70502 Filter Cartridge

Replaces Unicel C-7405

Darlly 70502 is a 50 sq ft filter cartridge, 7" x 14-3/4". It replaces Unicel C-7405.

Specifications

Darlly part number	70502
Outside diameter	7"
Length	14-3/4"
Top end cap	injection molded knob Handle
Bottom end cap	injection molded cone adapter
Filter area	50 sq ft
Darlly description	Baker-Hydro UM-50

Cross-reference

Brand	Part numbers Darlly 70502 replaces
Unicel	C-7405

Older or other numbers that also point to this cartridge (not confirmed by a second source): PBH-UM50 (Pleatco), FC-0760 (Filbur).

Other Darlly cartridges the same size

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

Darlly 7751575 sq ft · Caldera 75 (new style)Darlly 7040940 sq ft · skim filter, Pacific Spa Darlly 7050350 sq ft · Coleman Spas Darlly 7050450 sq ft · Goldkey Darlly 7050550 sq ft · Pleatco skim filter, Vita Spas Darlly 7050650 sq ft · top load-Coleman Spas, Vita Spas Darlly 7075175 sq ft · Dimension One Spas Darlly 7075275 sq ft · Caldera Spa

Questions

What is the Darlly replacement for Unicel C-7405?: Darlly 70502 replaces Unicel C-7405. Both are 7" in diameter and about 14-3/4" long.
What size is Darlly 70502?: Darlly 70502 is 7" in outside diameter and 14-3/4" long, with 50 sq ft of filter area.

Where to buy Darlly 70502

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 70502 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.