The Hydrotech 41400009 is a carbon filter that is used as a pre-filter and post-filter for RO 1230 and 1240 series reverse osmosis systems. Both the pre-filter and the post-filter need to be replaced at least every 6-months.
Carbon block pre/post filter cartridge
In the Box
1 x Hydrotech Carbon Pre/Post Filter for R.O. (41400009)