Name of this partition?

[Mikki]

Looks to me like the "wood framing it" is actually the white partition wall dyed brown and flipped so you are seeing the narrow end of it, with one on each side of the wardrobe and then maybe mounted box shelves using the floating glitch and dyed dark brown above it. A bit hard to tell since it's dark but I'm quite sure since they are using the mounted box shelves everywhere else (like above the garden and red wall).