What is the Darlly replacement for Unicel C-4600?

Darlly 40081 replaces Unicel C-4600. Both are 4-5/16" in diameter and about 8" long.

What Darlly cartridge replaces Pleatco PMS8-TC?

Darlly 40081 replaces Pleatco PMS8-TC.

What size is Darlly 40081?

Darlly 40081 is 4-5/16" in outside diameter and 8" long, with 8 sq ft of filter area.

Darlly 40081 Filter Cartridge

Replaces Unicel C-4600 · Pleatco PMS8-TC (discontinued) · Filbur FC-3850

Darlly 40081 is an 8 sq ft filter cartridge, 4-5/16" x 8". It replaces Unicel C-4600, Pleatco PMS8-TC (discontinued) and Filbur FC-3850.

Specifications

Darlly part number	40081
Outside diameter	4-5/16"
Length	8"
Top end cap	Closed
Bottom end cap	2-3/16" Open
Filter area	8 sq ft
Darlly description	Muskin A2300

Cross-reference

Brand	Part numbers Darlly 40081 replaces
Unicel	C-4600
Pleatco	PMS8-TC (discontinued)
Filbur	FC-3850

Other Darlly cartridges the same size

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

Darlly 400616 sq ft · Muskin Darlly 400628 sq ft · Muskin FP A2027, Sears, Haugh Products

Questions

What is the Darlly replacement for Unicel C-4600?: Darlly 40081 replaces Unicel C-4600. Both are 4-5/16" in diameter and about 8" long.
What Darlly cartridge replaces Pleatco PMS8-TC?: Darlly 40081 replaces Pleatco PMS8-TC.
What size is Darlly 40081?: Darlly 40081 is 4-5/16" in outside diameter and 8" long, with 8 sq ft of filter area.

Where to buy Darlly 40081

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 40081 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.