Upgrade your Dimension One spa filtration with the Darlly Spa/Pool Replacement Filter Cartridge [40256] (4CH-950). This top-load, 25 sq ft cartridge is engineered to deliver reliable debris capture and consistently clear water, keeping your spa experience pristine and inviting.
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Filtration area: 25 sq ft of surface area for effective debris removal and longer intervals between cleanings.
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Outer diameter: 4-5/8" (11.75 cm) for a snug, secure fit in compatible chambers.
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Length: 12" (30.5 cm) to maximize contact with circulating water.
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Top connection: 1-1/4" SAE thread, designed for easy top-load installation in Dimension One spas.
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Bottom connection: 1.5" SAE thread for a reliable seal and compatibility with standard fittings.
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End caps: Molded cone handle on the top end cap for effortless removal and maintenance.
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Compatibility: Specifically designed for Dimension One Spas with part numbers 4CH-950, FC-0173, PDO-UF25.
Why this cartridge stands out
- Top-load convenience means quicker changes without disassembling spa equipment, saving you time and effort during maintenance.
- 25 sq ft filtration capacity provides robust debris capture, helping to keep water clear and reduce the frequency of chemical adjustments.
- Designed to align precisely with Dimension One spa systems, ensuring a secure fit and optimal flow for consistent filtration performance.
Ideal use cases
- Spas that require a 25 sq ft replacement cartridge with 1.25" top and 1.5" bottom SAE connections.
- Top-load spa models where quick removal and installation are priorities.
- Regular spa maintenance routines where reliable filtration extends water clarity and equipment life.
Installation and care tips
- Before first use, rinse the cartridge to remove any manufacturing residues and prime the filter for optimal flow.
- Ensure the cartridge seats fully and seals properly with the corresponding spa housing to prevent leaks.
- Avoid overtightening fittings—hand-tight is typically sufficient to maintain a secure seal.
- Use as part of your routine spa maintenance to maintain water clarity and filtration efficiency.
