5 Micron, GAC/UDF, & 1 Micron Filters for Triple Counter Top System
**Please note that the GAC/UDF Cartridge's plastic shell color and design can differ from supplier to supplier. However, the activated carbon inside will be the same and perform the same function.
Over time the housing can become tight, and difficult to open by hand. If you do not already have one available to open the housings, we would recommend adding a housing spanner.
The Housing Spanner will allow you to gain more "purchase" on the housing, allowing you to open it more easily.