Brand: Gaugemaster Part Number: GM422 Scale / Type: HO / OO Scales This is a pre-coloured OO scale plastic kit of a portable site office, comprising of two stackable cabins with a walkway. Appropriate decals are included in this kit but additional painting will really bring this kit to life. This kit is moulded in three colours and clear plastic for the windows. Each cabin, once constructed measures 27mm wide x 70mm long x 34mm high. They can be positioned either side by side or on top of each other depending on the modeller.