![Darlly Cartridge [50 sq ft Pair, 2-1/8" OD Top x 2-1/8" OD Bottom x 4-15/16" dia x 6-5/8" L] (40505-2PK)](http://www.bathandspaparts.com/cdn/shop/files/17-777-1615_XL_1024x1024.jpg?v=1777941633)
| Filters | |
| Darlly Filtration | |
| 40505-2PK | |
| FC-2387 | |
| PRB25-SF, PRB25SF, PRB25SF-JH-PAIR, PRB25SF-PR | |
| C-4405, UNIC4405 | |
| 40505-2PK | |
| 12504, 17-2464, 3005825, 4900-34, 6000-134, 645544023872, 817-5010, AK-3026, APCC7062, C-4405, FC-2387, PLE-051-9555, PRB25-SF, PRB25SF, PRB25SF-JH-PAIR, PRB25SF-PR, SC732, UNIC4405 | |
| Open | |
| 2-1/8" | |
| Open | |
| 2-1/8" | |
| 6-5/8" | |
| 50 | |
| 4-15/16" | |
| Arizona Pacific (DFA), Beachcomber, Beachcraft Spas, Caribbean/Catalina, Clearwater Spas, DFA/Arizona Pacific, Diamante Spas (US Tooling), Diamond Back Spas, Discovery Spas, Freedom Spas, Grecian Spas, Legend Spas, Lifestyle Spas (Canada), Moose Mountain Spas, Rainbow/Pentair, Signature Spas, Starlight Spas (US Tooling), Sundance Spas, Sunrise Spas (Canada), Thermo Spas, US Tooling & Spa, US Tooling/Diamante Spas, US Tooling/Starlight Spas, Waterway, 35sqft Skim Filter (Sold as Pair), DSF-50 Skim Filter (Sold as Pair) |
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The Darlly 40505-2PK filter cartridge set is designed for compatible filtration systems that use a paired 50 square foot cartridge configuration. Each cartridge features 2-1/8 inch top and bottom openings, a 4-15/16 inch diameter, and a 6-5/8 inch length, making this two-pack especially useful for systems built around dual compact elements.
Paired cartridge systems require the right size on both elements to maintain proper balance and fit inside the housing. Replacing both together can be a smart maintenance move when the existing pair has aged at the same rate and the goal is to restore the system with a matched set. This helps reduce inconsistency and simplifies service planning.
The Darlly 40505-2PK is a practical choice for buyers who need a compact dual-cartridge replacement set rather than a single standalone element. It offers fit consistency, cleaner service workflow, and a more complete maintenance solution for compatible systems.
Darlly Filtration – Pool & Spa Filter Cartridges and Replacement Filters |
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Who is Darlly Filtration?
Darlly Filtration is a global leader in the manufacturing of pool and spa filter cartridges, known for producing high-quality, OEM-compatible replacement filters. With advanced engineering and large-scale production capabilities, Darlly supplies filters used by major brands worldwide. Their reputation for consistency, performance, and value has made them a trusted choice for both residential and commercial pool and spa owners. What products does Darlly Filtration specialize in?Darlly specializes in filter cartridges and replacement filters for pools, spas, and hot tubs. Their product lineup includes pleated filter cartridges designed to capture fine debris, dirt, and contaminants while maintaining optimal water flow. Darlly filters are available in a wide range of sizes and configurations, making them compatible with many leading equipment brands. Why choose Darlly Filtration parts for your pool or spa?Darlly filters are known for high filtration efficiency, durability, and cost-effective performance. Their cartridges are engineered to provide excellent water clarity while extending filter life and reducing maintenance frequency. Customers choose Darlly for reliable replacement filters that offer a strong balance of quality, compatibility, and value. How do you identify and choose the correct Darlly Filtration part?To select the correct Darlly filter, it’s important to match your existing cartridge’s dimensions, including length, diameter, and top/bottom configuration. Cross-referencing part numbers or filter model compatibility ensures proper fit and performance. You can use our FILTER FINDER to help you find the proper filter in minutes. Choosing the correct filter helps maintain water clarity, improve system efficiency, and protect pool and spa equipment. Need help finding the right Darlly Filtration part?At Bath & Spa Parts Online, we carry a wide selection of Darlly Filtration pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support. |
$85.48 $69.91
$867.56 $666.43
![Darlly Cartridge [50 sq ft Pair, 2-1/8" OD Top x 2-1/8" OD Bottom x 4-15/16" dia x 6-5/8" L] (40505-2PK)](http://www.bathandspaparts.com/cdn/shop/files/17-777-1615_XL_compact.jpg?v=1777941633)
