Late reply but..
I replaced my stock 87 fridge with a TF49. That's when I came up with the
idea to put two of the Blue Seas USB outlets in the vent grate. The one on
side of fridge cabinet above the lift up doors the water tank lives under.
Gives me four USB receptacles. I leave my electronics next to it while
camping.
Will try and post a pic with link later.

Bill M