Part # R178580
Dimensions 20" L x 7" W x 7" D
R178580 filter cartridge Filter description: Diameter: 7" Length: 20 1/16" Top: Open 3" Bottom: Open 3" Compatible with all filters using R178580 filter cartridges
Click here for more Pentair Pool Filter Cartridge
What is the micron rating on the P178580 FILTER? also is this interchangeable with the P173578?
Hi, Ray. Cartridge filters have a micron rating around 10. The R178580 cartridge can not interchangeable with the R173578.
I have tried generic cartridges but I prefer the OEM versions. Is this an original part made by Pentair?
Yes it is a Pentair replacement. It is made to the original specifications as your original cartridge.