Possible new fireplace location?

[Ron C]

Hi,
I have a 2011 Montana 2995RL Hickory ed to which I wanted to add a small Dimplex electric fireplace.
My unit is stored a few hundred miles away, so I don’t have easy access.
There is a hickory panel below the entertainment center (see photo) where I hope to install the fireplace. It will need 9 to 10 inches of depth and a space of 25 x 18 in front.
Does anyone know if there is some space behind that panel or is it filled with furnace, plumbing or other systems?
I have seen photos of built-in vacuums installed to the right side of the space, but not a FP.
Is there any member out there who is in the know?
I have seen photos of a FP unit in older Keystone models in a similar place and of there being lower cabinets in other models which can be adapted for a FP. However, not this year and model. (The rear living one with the En Center next to the stairs)
Any help is much appreciated,
RonC