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The Filbur 40-23420 is a compatible replacement for the following water filters:
The Filbur 40-23420 40" 20 Micron Pool/Spa Filter is a replacement pool and spa water filter cartridge with a 20 micron rating for reducing impurities in water. This 20 micron filter is constructed with pleated polyester media that is very durable and efficient. This pleated pool filter prevents surface blinding, which will result in the proper flow of water for your cartridge. In addition, this Filbur pool and spa filter is both cleanable and reusable.
Filbur 40-23420 40" 20 Micron Pool/Spa Filter specifications: