What is the Darlly replacement for Unicel C-8411?

Darlly 80755 replaces Unicel C-8411. Both are 8-15/16" in diameter and about 17-3/8" long.

What Darlly cartridge replaces Pleatco PA76?

Darlly 80755 replaces Pleatco PA76, which Pleatco now sells as ULTRA-B6.

What size is Darlly 80755?

Darlly 80755 is 8-15/16" in outside diameter and 17-3/8" long, with 75 sq ft of filter area.

Darlly 80755 Pool Filter Cartridge

Replaces Unicel C-8411 · Pleatco PA76 (now ULTRA-B6) · Filbur FC-1255

Darlly 80755 is a 75 sq ft pool filter cartridge, 8-15/16" x 17-3/8". It fits the Hayward Star-Clear Plus C751, the Sta-Rite Posi-Clear PXC-75 and the Waterway Clearwater II 75 and Pro-Clean 75. It replaces Unicel C-8411, Pleatco PA76 (now ULTRA-B6), Filbur FC-1255, Hayward CX760RE and Sta-Rite 25230-0075S.

Specifications

Darlly part number	80755
Outside diameter	8-15/16"
Length	17-3/8"
Top end cap	4" Open w/ molded gasket
Bottom end cap	4" Open w/ molded gasket
Filter area	75 sq ft
Type	Pool
Darlly description	Hayward CX760RE, Sta-Rite PXC-75, Waterway Pro Clean 75, Waterway Clearwater II 75

Cross-reference

Brand	Part numbers Darlly 80755 replaces
Unicel	C-8411
Pleatco	PA76 (now ULTRA-B6), ULTRA-B6
Filbur	FC-1255
Hurricane (former brand)	HF8411-01
OEM and other numbers	Hayward CX760RE, Sta-Rite 25230-0075S, Waterway 817-0075N, Waterway 817-0075P

Older or other numbers that also point to this cartridge (not confirmed by a second source): FC-1256 (Filbur).

Filters it fits

Filter	Cartridges per filter	OEM cartridge number
Hayward Star-Clear Plus C751 (75 sq ft filter)	1	CX760RE
Sta-Rite Posi-Clear PXC-75 (75 sq ft filter)	1	25230-0075S
Waterway Clearwater II 75; Pro-Clean 75 (75 sq ft filter)	1	817-0075N, 817-0075P

Other Darlly cartridges the same size

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

Darlly 8095190 sq ft · Hayward Star-Clear Plus C900 Darlly 81005100 sq ft · Hayward X-Stream CC1000

Questions

What is the Darlly replacement for Unicel C-8411?: Darlly 80755 replaces Unicel C-8411. Both are 8-15/16" in diameter and about 17-3/8" long.
What Darlly cartridge replaces Pleatco PA76?: Darlly 80755 replaces Pleatco PA76, which Pleatco now sells as ULTRA-B6.
What size is Darlly 80755?: Darlly 80755 is 8-15/16" in outside diameter and 17-3/8" long, with 75 sq ft of filter area.

Where to buy Darlly 80755

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 80755 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.