Barracks, Garage, Power Station  w/ Hex Base, War Game Terrain (6mm). These are small sized buildings that are:
Barracks: 4x3 hex in size
Power Station: 3x3 hex in size
Garage: 3x2 hex in size
 
Mech in the photo is for size reference only and not included in the listing.
 
Barracks dimensions are as follows:
Width: 5.25 inches
Length: 3.75 inches
Height: 1.25 inches
 
Power Station dimensions are as follows:
Width: 3.875 inches
Length: 3.75 inches
Height: 1.375 inches
 
Garage dimensions are as follows:
Width: 3.25 inches
Length: 3.75 inches
Height: 1.25 inches
 
Printed with PLA+ with 0.15mm layer height.