![Darlly Spa/Pool Replacement Filter Cartridge [81003] (UHD-SR100) Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge 81003](http://bathparts.com/cdn/shop/files/81003.jpg?v=1762191166&width=1600)
![Darlly Spa/Pool Replacement Filter Cartridge [81003] (UHD-SR100) Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge 81003](http://bathparts.com/cdn/shop/files/81003_1024x.jpg?v=1762191166)
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Spa/Pool Replacement Filter Cartridge [81003]
| Application | StaRite/Pentair |
| Bottom Physical Dimension | 6" |
| Bottom Style | Open w/Slots |
| Diameter | 8-11/16" |
| Length | 25-11/16" |
| Media Type | 4oz |
| Model | Posi-Flo TX/TXR/PTM 100 |
| Square Footage | 102 sq ft |
| Top Physical Dimension | 4-3/16" |
| Top Style | Open |