This one is a larger one than most of my models. It's 12" x 6.1/2" x 3 3/4". The roof is the largest single piece at 8 1/2 x 5 3/4". The windows, doors and skylights have the glass printed in them using a dual extruder, but the .slt files are separate so you can print the frames and apply your own style of glass. Most parts are self locating and/or snap into place. The freight doors on mine are just snapped in place for now because I want to make them opening doors.