Product Description:

Save 10% over the individual pricing when you bundle these two filters together. This bundle comes standard in the
Double 20" Big Blue Filter Package. Refill your RainFlo Double Big Blue Filter today.
This bundle includes the time-tested filters we ship with our filter panels and housings, including the 20 and 5 micron pleated filters. Trust that your filters will operate as well as they did on day one by sticking with OEM replacements. We recommend changing your sediment filters every 6 months for average use cases, or when the PSI drop meets or exceeds 7 PSI.
All RainFlo Preferred Big Blue sediment filters feature integrated Buna-N gaskets to prevent contamination of filtered water, and the ends are completely molded into a vinyl plastisol base. The overlap seam is sonically welded to reduce internal bypass improving filtration efficiency.
RainFlo Preferred Pleated Filters |

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The RainFlo Preferred 20" x 4.5" Full Flow/Big Blue pleated filters have more than 16 square feet of filtration surface area. The media is pleated to maximize dirt-holding capacity and extend the time period between changes or cleaning. The Premium pleated cellulose cartridges are manufactured from a durable, bacterial resistant, non-woven polyester cellulose that is suitable for a wide range of filtration uses. The filter media is pleated around a polypropylene core for added strength. Embedding and sealing each end of the pleated media in this fashion fuses the three components together forming a unified end cap and gasket.
Features:
- Pleated design increases surface area and maximizes dirt holding capacity
- Integrated gasket for improved sealing
- Can be washed with clean water to increase effective lifespan
- Polyester cellulose media is bacteria and chemical resistant
- Versatile and reusable, allowing for a variety of uses
- Low pressure drop and high flow rate
Applications:
- General water, UV and R.O. pre-treatment
- Residential and commercial water treatment
- Pre-filtration of sterile water and ultrapure water
- Industrial water
Specifications:
- Filter media: Polyester cellulose
- Core: Polypropylene
- End cap: Vinyl plastisol
- Outer diameter: 4.5"
- Inner diameter: 1.1"
- Maximum operating temperature: 125° F
- Maximum differential pressure: 58 PSI at 68° F