The Philly Modular Flat is a unique departure from our regular kits. It is made up of 10 sheets of walls & windows & pilasters & other parts that will allow you to construct buildings as small as one bay by one bay by one story to just about any size you wish. You just keep printing and adding more pieces. You imagination is the only limit. You will have to do more planning and fabrication than usual, but that is the fun of this kit. Two examples of what is possible are shown, but the possibilities are endless. NOTE: This kit comes in O scale with instructions to print in ANY smaller scale.