I wanted to use the built in water tank for all our water needs - instead of carrying around 5 gallons for drinking, etc. In order to do that, I felt it would be important to add an inline water filter for the galley sink. Although we filter the water when we fill, the water quality varies and more filtering is better.
I went with an Everpure ADC filter - it got good reviews, is built well, has good specs, and seemed like it would fit. I found examples on FB for installing in a Revel, but they were for earlier models with a different cabinet layout. They wouldn't work in the 2021.
I found a spot behind the lower drawer that works, but you have to mount to the wood panel located behind. This panel is only 1/2" thick and the filter is kinda heavy - esp with water. I decided to make a bracket to secure the lower portion and provide additional support. I cut about 12" off the cold line and attached that to the filter inlet. I got a 20" braided faucet line to hook the outlet up to the cold on the faucet.
It just fits!