What is the Darlly replacement for Unicel C-8325?

Darlly 81254 replaces Unicel C-8325. Both are 8-7/16" in diameter and about 18" long.

What Darlly cartridge replaces Pleatco PSD125U?

Darlly 81254 replaces Pleatco PSD125U.

What size is Darlly 81254?

Darlly 81254 is 8-7/16" in outside diameter and 18" long, with 125 sq ft of filter area.

Darlly 81254 Spa Filter Cartridge

Replaces Unicel C-8325 · Pleatco PSD125U · Filbur FC-2790

Darlly 81254 is a 125 sq ft spa filter cartridge, 8-7/16" x 18". It replaces Unicel C-8325, Pleatco PSD125U and Filbur FC-2790.

Specifications

Darlly part number	81254
Outside diameter	8-7/16"
Length	18"
Top end cap	Closed w/ 3-step edge
Bottom end cap	2-1/2" Open w/ beveled edge
Filter area	125 sq ft
Type	Spa
Darlly description	Sundance Spas-Universal Length

Cross-reference

Brand	Part numbers Darlly 81254 replaces
Unicel	C-8325
Pleatco	PSD125U
Filbur	FC-2790
Hurricane (former brand)	HF8325-01

Questions

What is the Darlly replacement for Unicel C-8325?: Darlly 81254 replaces Unicel C-8325. Both are 8-7/16" in diameter and about 18" long.
What Darlly cartridge replaces Pleatco PSD125U?: Darlly 81254 replaces Pleatco PSD125U.
What size is Darlly 81254?: Darlly 81254 is 8-7/16" in outside diameter and 18" long, with 125 sq ft of filter area.

Where to buy Darlly 81254

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 81254 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.