I am in the final stages of deciding on my kitchen cabinets. I want to place a reverse osmosis system under my prep sink in my island.

I would like to use an 18" sink base. I called GE to inquire if their RO system would fit under the sink, and I was told that the length and width couldn't change - I wanted to make the length side the width side and the width side the length side since the cabinet would be 18" x 24".

If you have a RO system under your sink, please let me know how much space you needed to fit it in there. Do they have to fit a special way or is there some ability for me to position the tank and filters so they fit? Do you think I could fit one in an 18" sink base?

TIA