This is a 3d printed Warehouse Building Garage Workshop Wargaming Industrial Building 28mm Lockup 3d printed in grey. (Any finished items, extra scenery like bases you see with paint are just purely for demonstration purposes only but can give you an idea of the look).
This comes as several pieces: Doors x 1 that just slot in, Roof sections x 2 and 2 outer wall sections which interlock, can be glued if you wish using normal glue however due to the size its probably easier to keep separate so you can move from place to place easily and remove the roof if you want characters in there.
Dimensions approx:
25.8cm Wide x 12.2cm Deep x 9.7cm