Spa Filter

Whole sale spa, hot tub water filter cartridge replacements compatible with Pleatco, Unicel, Bestway and Intex. NSF 50 tested high quality. Support business bulk-buying orders. Inquire wholesale quote now.

PDM25P4 Pleatco comparable Hot Tub Water Filtration Filter Cartridge OEM Order

PDM25P4 Pleatco comparable Hot Tub Water Filtration Filter Cartridge OEM Order

Pleatco PDM25P4 comparable compatible hot tub filter cartridge replacements. Our products have been tested and accredited by IAPMO against NSF/ANSI standard 50.

Product Specification:
  • Item: Hot Tub Water Filter
  • Model: 4CH-21
  • Replaces: Pleatco PDM25P4
  • Cert.: NSF 50
  • Sale: OEM, ODM, Private Label
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1. NSF/ANSI 50 Certified

This pdm25p4 hot tub filter replacement is tested and certified by IAPMO against NSF/ANSI 50 on material safety. Delivers safe and clear purified water to inspire the highest sense of happiness.

pool & spa owners enjoy their leisure time.

2. Dimensions & Size

Length: 8”; Outside Diameter: 4 5/8"; Top: Circular Handle; Bottom: 1 1/2" MPT Threaded; Filtration Area: 18 sq. ft.

3. Powerful Filtration Performance

Innovated "Dirt-Locking" technology make the fabric traps much more contaminants than regular fabric. Efficiently removes hair, leaves, dust, sediment, sand and other large impure particles and


4. Compatible Filter Models

Our pdm25p4 hot tub filter replacement perfectly fits Pleatco PTL18P4, Unicel: 4CH-21, Filbur: FC-0121, SD-00845, SD-00821, SD-00838, PTL18-XP, SD-01161, PTL18-4, SD-01363. NOTE: All

trademark remain the property of their respective holder(s) and are used for compatibility information only.

5. Long Time Filtration Life

Unique Trilobal Filtration Fabric Structure make it easier to capture large volume of contiminants. It is also easy to wash/clean to recondition the filter. This filter lasts for 1-2 years when proper

maintenance is performed. We are committed to providing the best quality at good factory wholesale price.






  Hot Tub Water Filter




  Pleatco PDM25P4


  NSF/ANSI Standard 50



  Outside Diameter

  4 5/8"


  Circular Handle


  1 1/2" MPT Thread

  Filtration Area.

  18 SQ.FT

  Filter Life

  Lasts for 1-2 years (depends on water quality)


  1. OEM & ODM Making

  2. Large Quantity Wholesale

  3. Private Label Manufacturing

  NOTE: All brands and models are used for compatibilities reference only.



Frequently Asked Questions


1. Q: What is your minimum order quantity?

     A: Normal order: 100—200 pcs; OEM order: 500 pcs

2. Q: How is your product delivered?

     A: Samples: DHL/TNT/UPS expresses; Bulk goods: sea transportation

3. Q: Is your product suitable for small businesses?

     A: We supply products for small business owners.

4. Q: Do you offer a free trial or demo of your product?

     A: We offer free samples for tests before official orders.

5. Q: Do you offer custom plans or packages for larger organizations?

     A: We support OEM, ODM, private label and packages based on requirements.

6. Q: What information should I let you know if I want to get a quotation?

     A: 1) Model number. 2) Size and dimension. 3) Function requirements. 4) The brand. 5) Quantity.



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