Those two holes sort of look like they will match up with the standard HDTV swing out mounts... Take you plate down to WALMART and see if it will align up to those two empty holes... WALMART has a hugh selection of HDTV wall mounts on display where all the HDTV are located in the store...
I would look for one that does a double hinge thing where it will swing way out from the side wall of inside the storage bay...
Google Images
You not even need that special piece of metal you are showing in your post... Depends on how strong the sides are inside the storage Bay... Or perhaps those four black screw heads lines up with a standard HDTV mount REVA mount... My wall mount has the four screw on the HDTV side but only two screws holes that gets screwed into a wall stud for strength...
Just keep in mind the RV wall are really thin and you cannot just use a screw through one the flimsy wall. It will just pull the screw out from the weight of the HDTV set. You might be able to add a 1x4 piece of wood on the edge shown as a backing plate and mount the HDTV mount to that...
My wall mount here in the house wall looks something like this...
google image
Should be able to find everything you will need at WALMART or LOWES
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
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