iFilters Dual Purpose Radial Flow Cartridge 4.5" x 20"

This filter fits in most brands 20" Big Blue size 4.5" x 20" housings (Ametek, Bruner, Cuno, Harmsco, Hydronix, Keystone, Kleen Plus, Plymouth Products, USFilter, moisture Resources, and many other brands).. appropriate Part or Model Numbers: RFC20-BB and SDP-4520. 40 to 125 degrees Fahrenheit Temperature Rating. 0.9 psi Initial (psi) at 4 gpm Flow Rate. 25 Microns Nominal. Specifications: 20" L x 4.5" D. Applications: City or well aqua. Filter Media: Polypropylene outer layer, Granular activated carbon media center and Polypropylene center core. Effectively Reduces: Sediment, Organics, Bad Chlorine Taste and Odor. The filter has a 3rd layer of 5 micron Polypropylene at its core to reinforce the filter and further filter contaminants. This dual (2 stage in one) filter has a 25 micron sediment outer core with GAC Coconut Shell Carbon media in its center. The iFilters RF-4520 filters down to 25 microns and are perfect for compact filtration needs where only one housing is used but dual filtration is needed. The iFilters RF-4520 radial flow Sediment and Carbon Filter (Dual Filtration) are 20 inch x 4.5 inch dual purpose filters