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Description
Darlly Spa/Pool Replacement Filter Cartridge 50401 is your go-to direct replacement for keeping Marquis and Amish Country spas and pools crystal clear. This 50401 cartridge (also listed as FC-3637, C-5637, PM40) is engineered to slot into your existing setup without missing a beat, replacing a wide range of older part numbers including 14006, 37-0214, 4900-59, 609464, 645544036377, AK-4033, C-5637, PLE-051-9542, and PPM40. If your spa is built on Marquis or Amish Country bottom configurations, this cartridge is designed to fit and perform. What makes this cartridge stand out
- Precise compatibility: Specifically crafted for Amish Country (Marquis) and Marquis Spas, including Marquis/Amish Country bottom models, so you don’t have to guess if it will fit.
- Generous filtration area: 40 square feet of filtration media delivers better debris capture, helping your spa stay clearer between cleans.
- Durable media in a compact form: 4 oz filtration media provides effective particle retention while maintaining a compact, easy-to-handle cartridge.
- Exacting dimensions for a hassle-free install: Bottom diameter 1-5/8", top diameter 1-1/16", overall length 19-5/8", with a bottom open diameter of 5-3/16" and a top open style. These specs ensure a snug, secure fit in compatible housings. Who benefits most
- Spa owners with Marquis or Amish Country systems seeking a reliable, ready-to-fit replacement cartridge
- Homes that want straightforward maintenance with fewer cartridge omissions or improvisations
- Those aiming to improve water clarity and filtration efficiency without changing their filtration housing How this replacement cartridge helps you maintain a healthier spa
- Cleaner water, fewer maintenance cycles: The 40 sq ft of media traps dirt, oils, and debris more effectively, reducing frequency of backwashing or deep cleanings.
- Easier routine maintenance: A straightforward, true-to-fit cartridge that’s easy to remove, rinse, or replace, helping you keep filtration simple and predictable.
- Long-term value: By using a robust replacement that matches the original performance, you preserve pump efficiency and water quality without resorting to generic substitutes. Practical tips for best results
- Install with clean hands and ensure the cartridge seats firmly in the housing before running the pump.
- Rinse the cartridge under cool water before first use to remove any loose manufacturing residue.
- Periodically rinse the media, and replace the cartridge when water flow drops noticeably or after several months of use based on spa frequency.
- Pair with a regular spa maintenance routine: balance pH, monitor sanitizers, and keep the filter area free of buildup for optimal performance. In short, the Darlly 50401 replacement cartridge offers a precise fit and dependable filtration for Marquis Spas and Amish Country systems, delivering solid performance with each cycle. If you’re looking for a trusted, OEM-compatible solution that aligns with your spa’s original design, this cartridge is built to satisfy and simplify your filtration routine.
| Application | Amish Country (Marquis), Marquis Spas, Marquis/Amish Country |
| Bottom Physical Dimension | 1-5/8" |
| Bottom Style | Open |
| Diameter | 5-3/16" |
| Length | 19-5/8" |
| Media Type | 4oz |
| Square Footage | 40 sq ft |
| Top Physical Dimension | 1-1/16" |
| Top Style | Open |