The Aqua Flo CB-10-20 cartridge fits in the following filter housings:
The Aqua-Flo - 10 Micron Carbon Block Filter 20"x 2.5" is a drop-in filter with carbon block media. This carbon block filter is equipped with a 10 micron rating that helps reduce chlorine taste & odor in your water. This Aquaflo filter measures 20 inches in length and 2.5 inches in diameter. With this 20" filter you will be able to improve your water's taste and increase its clarity.
Aqua-Flo - 10 Micron Carbon Block Filter 20"x 2.5" specifications: