The Pentek 255596-43 is sold in a case of 12 and is compatible with the following water filters:
The Pentek 255596-43 20 Micron Coconut Carbon Filter is a coconut carbon filter with a 20 micron rating. With a 20 micron rating, this 3/8" FNPT, inline hexametaphosphate and coconut shell cartridge provides limescale, chlorine, and odor reduction for your drinking water, which results in water that is purer and better tasting. This inline filter cartridge is made from high quality construction material that is both strong and durable.
Pentek 255596-43 20 Micron Coconut Carbon Filter specifications: