This customer has the Rec Room 32" Sit down for which there is currently not a mount for. He was able to make it work however by doing the following. This isn't officially supported but sharing for reference.
"Took the 2 top screws out of each side to get the top off...but there are also wood dowels in there so I took out the back screw below the top on one side to get a little leverage, stuck a screwdriver in there to make room and cut the dowel out of one side so I can take the top off. Then I got the lcd part in the slot, ran the plug out of the back hole, centered it, and put the top back on. I lined up the rear screws on the top, the front are too high now so I rested it on top of the lcd and held it down so it was snug while I tightened the screws back in. The bottom 2 were a little tricky, I had to put some pressure to get them in but they fit. I tried pulling on it a bit and it wasn't moving but like I said I might get some black tape to fill in the sides and maybe secure it more. Lastly covered up the gaps in the sides with black painter's tape."