Wooden cover next to bed.

[MunkMaster]

Sooooo next to the bed on the floor I have this 2 sided wooden box. Under the box is insulation. The box rests against the back of the camper and the base of the bed. Are these factory or did the previous owner make it? There's insulation on the other side in between the bed base and side cabinet but I have to make a cover for that side. This box has a screw in it but the screw doesn't screw into anything.

Thanks.