What is the Darlly replacement for Unicel C-4995?

Darlly 41001 replaces Unicel C-4995. Both are 4-15/16" in diameter and about 23-5/8" long.

What Darlly cartridge replaces Pleatco PCAL100?

Darlly 41001 replaces Pleatco PCAL100.

What size is Darlly 41001?

Darlly 41001 is 4-15/16" in outside diameter and 23-5/8" long, with 95 sq ft of filter area.

Darlly 41001 Spa Filter Cartridge

Replaces Unicel C-4995 · Pleatco PCAL100 (discontinued) · Filbur FC-2940

Darlly 41001 is a 95 sq ft spa filter cartridge, 4-15/16" x 23-5/8". It fits the Waterway 100 and Cal Spas. It replaces Unicel C-4995, Pleatco PCAL100 (discontinued), Filbur FC-2940 and Waterway 817-1000.

Specifications

Darlly part number	41001
Outside diameter	4-15/16"
Length	23-5/8"
Top end cap	2-1/8" Open
Bottom end cap	2-1/8" Open
Filter area	95 sq ft
Type	Spa
Blue antimicrobial version	41001M
Darlly description	Waterway Plastics, Cal Spas

Cross-reference

Brand	Part numbers Darlly 41001 replaces
Unicel	C-4995
Pleatco	PCAL100 (discontinued)
Filbur	FC-2940
Hurricane (former brand)	HF4995-01
OEM and other numbers	Waterway 817-1000

Filters it fits

Filter	Cartridges per filter	OEM cartridge number
Waterway 100; Cal Spas (95 sq ft filter)	1	817-1000

Other Darlly cartridges the same size

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

Darlly 4075275 sq ft · Waterway Plastics

Questions

What is the Darlly replacement for Unicel C-4995?: Darlly 41001 replaces Unicel C-4995. Both are 4-15/16" in diameter and about 23-5/8" long.
What Darlly cartridge replaces Pleatco PCAL100?: Darlly 41001 replaces Pleatco PCAL100.
What size is Darlly 41001?: Darlly 41001 is 4-15/16" in outside diameter and 23-5/8" long, with 95 sq ft of filter area.

Where to buy Darlly 41001

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 41001 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.