Pleatco PRB25-IN Filter Cartridge


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Product Overview

Pleatco PRB25-IN Filter Cartridge for Pools and Spas

Condition: Unused, sealed new old stock in excellent condition.

The Pleatco PRB25-IN is a high-quality replacement filter cartridge designed for use in spas and hot tubs. It offers exceptional performance, durability, and compatibility with a wide range of systems.

Key Features and Specifications

  • Outer Diameter: 5 inches
  • Length: 13 15/16 inches
  • Top Hole Diameter: 2 1/8 inches
  • Bottom Hole Diameter: 2 1/8 inches
  • Material Area: 25 square feet


The Pleatco PRB25-IN filter cartridge is compatible with a variety of spa and pool systems, including:

  • Rainbow 25
  • Waterway
  • CMP

It also replaces several other filter models, such as:

  • Unicel C-4326
  • Filbur FC-2375
  • OEM parts: 17-2327, 100586, 817-2500, R173429

Compatible Brands

This filter can be used with pools and spas from numerous manufacturers, including:

  • Accent Spas
  • Acryx-Maax Spas
  • Apollo Spas
  • Aqua Mystic Spas
  • Beachcomber
  • Blue Falls Manufacturing Ltd.
  • Coast Mountain Spas
  • Coleman Spas
  • Custom Molded Products
  • Dakota Spas
  • Emerald Spas
  • Endless Pools
  • Freestyle Spas
  • Futura Spas
  • Great Lakes Home Resort
  • Hawkeye Spas
  • Honey Tubs
  • Hot Spot
  • Hot Spring Spas
  • Hydropool Industries
  • Islander Spas
  • Jacuzzi Premium
  • Leisure Bay Manufacturing
  • Moonwater Spas
  • Nordic Hot Tubs
  • Onyx Water Products
  • Orca Bay Spas
  • PDC Spas
  • Pentair Pool Products - Rainbow Plastics
  • QCA
  • Rec Warehouse
  • River Valley Spas
  • Royal Spas
  • Rubadub Tub
  • Safari Spas
  • Signature Spas
  • Spa Manufacturers Inc.
  • Streamline Spas
  • Sun Ray Spas
  • Thermo Spas
  • US Spas
  • Viking Spas
  • Water’s Edge Spas
  • Waterway Plastics
  • Zone Spas

Performance and Durability

The Pleatco PRB25-IN filter cartridge is known for its durability and high performance. It features a unique trilobal fabric that provides 21-40% more effective surface area compared to competing products, making it highly efficient at capturing contaminants such as hair, leaves, dust, sediment, and sand. The high-uniform media of the filter allows for thorough cleaning and can withstand the demands of multiple cleanings without wearing out quickly.

Customer Feedback

The Pleatco PRB25-IN has received generally positive reviews from customers, with an average rating of 3.9 out of 5 stars on Amazon. Users have praised its effectiveness in maintaining water quality and its ease of cleaning. Some users have noted improvements in water clarity and overall spa performance after installing this filter.

About Pleatco: Innovators in Filtration Technology

When you choose a Pleatco PRB25-IN Filter Cartridge, you're selecting a product with over seven decades of filtration expertise behind it.

A Legacy of Innovation

Founded in 1950, Pleatco began as a small regional company in the Northeast, manufacturing replacement filter cartridges for pools and spas. Through continuous innovation and commitment to quality, Pleatco has grown into an industry-leading brand with a global presence.

Commitment to Excellence

Pleatco's dedication to superior filtration is evident in their product line, marketed under the Pleatco Ultra and Pleatco Advanced brands. These products are backed by industry-leading engineering, rigorous product development, and exceptional customer service.

Expanding Horizons

In 2019, Pleatco LLC rebranded as Pleatco Filtration, marking a new era of growth. The company has since expanded its expertise by merging with other filtration specialists:

  • APEL International: Experts in custom and standard replacement cartridge filters
  • Milton Manufacturing: Pioneers in high-quality cartridge filter improvements
  • TVS Filters: Specialists in industrial air filters, particularly for gas turbine applications
  • Environmental Filter: Leaders in aftermarket air filtration products

Innovation and Recognition

Pleatco's commitment to excellence has not gone unnoticed. They are the first and only company to be awarded the industry-leading Trade Certification for pool & spa filters, a testament to their dedication to quality and innovation.

Why Choose Pleatco?

When you select a Pleatco product like the PRB25-IN Filter Cartridge, you're not just buying a filter – you're investing in:

  • Decades of filtration expertise
  • Cutting-edge technology and materials
  • Rigorous quality control
  • A commitment to customer satisfaction

With Pleatco, you can trust that your pool or spa is protected by some of the most advanced filtration technology available in the market today.


(No reviews yet) Write a Review

Item was as described, and very fast delivery!

5 stars across the board for every seller rating category, and I would buy from this seller again. And per my request, the capacitors were also very well packed for safe delivery.

Bruce B.

Obtainium have been a very helpful seller to me.

In recent times I have had a few items go astray enroute to my address in Australia. This seller was most helpful & encouraging, regarding the onward tracking & eventual safe delivery of this item. This item's arrival in good condition was a joy to me as, it was a rare part that fitted my military comms. Well done seller. I would gladly recommend this seller to all potential buyers.

Jean-Pierre H.

The item was as described and in good and working condition.

Delivered as promised. I would order again if store has anything else I may need. THANK YOU!

Robert L.

Super Duper Fast Shipping.

Item As Described. Packaged Nicely, What A Seller.

Wayne L.

Product shipped quickly and arrived in good shape

J. Fong


The instrument was well packed. It is in extremely good condition. It passed all preliminary tests.

Raymond W.

Item looks better than described, looks brand new and works great.

My old buffer was 50 years old and I sent it to buffer heaven, thanks.

Mike H.

Just what the doctor ordered.

Good supply and price. Thxs

Ralph M.

As advertised. Would buy from again.

S. Scafer

Perfect transaction, pleasure to deal with.

M. Dante