The Garage Barn comes with 6'6" side walls. Our 12' wide Garage comes with a 6x6 roll-up door. Both 14' and 16' wide buildings come with a 9x7 roll-up door. All Garages come with a 3ft side entry door, and 2 single pane windows. The garage barn also comes with the option to add a 4' or 8' loft for extra storage space.