Darlly 81005 Pool Filter Cartridge
Replaces Unicel C-8311 · Pleatco PXST100 (now ULTRA-B6) · Filbur FC-1285
- Diameter × length
- 8-15/16" × 17-3/8"
- Filter area
- 100 sq ft
- End caps
- 4" Open w/ molded gasket / 4" Open w/ molded gasket
- Per filter
- 1 cartridge
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.
Darlly 81005 is a 100 sq ft pool filter cartridge, 8-15/16" x 17-3/8". It fits the Hayward X-Stream CC1000. It replaces Unicel C-8311, Pleatco PXST100 (now ULTRA-B6), Filbur FC-1285, Hayward CCX1000RE and Hayward CC1000RE.
Specifications
| Darlly part number | 81005 |
|---|---|
| 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 | 100 sq ft |
| Type | Pool |
| Darlly description | Hayward X Stream CC1000RE |
Cross-reference
| Brand | Part numbers Darlly 81005 replaces |
|---|---|
| Unicel | C-8311 |
| Pleatco | PXST100 (now ULTRA-B6), ULTRA-B6 |
| Filbur | FC-1285 |
| Hurricane (former brand) | HF8311-01 |
| OEM and other numbers | Hayward CCX1000RE, Hayward CC1000RE |
Filters it fits
| Filter | Cartridges per filter | OEM cartridge number |
|---|---|---|
| Hayward X-Stream CC1000 (100 sq ft filter) | 1 | CCX1000RE, CC1000RE |
Also made as PP81005, the same size.
Other Darlly cartridges the same size
Same diameter and length. Check the end caps and area before swapping.
Questions
- What is the Darlly replacement for Unicel C-8311?
- Darlly 81005 replaces Unicel C-8311. Both are 8-15/16" in diameter and about 17-3/8" long.
- What Darlly cartridge replaces Pleatco PXST100?
- Darlly 81005 replaces Pleatco PXST100, which Pleatco now sells as ULTRA-B6.
- What size is Darlly 81005?
- Darlly 81005 is 8-15/16" in outside diameter and 17-3/8" long, with 100 sq ft of filter area.
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.