• 4x21 carbon filter for chlorine.

20051 Carbon Filter (4x21")

  • $107.85
  • $0.00

Looking for a replacement carbon filter cartridge for 4x21" Housings?

This is it.

These one time use carbon filter cartridges fit the 4x21" RO Housings from many different manufacturers.

Filled with our high grade coconut shell carbon these filters will remove all of the chlorine in your water to make safe for your RO membrane to process.