SIMPSON K-Barn Door 36-in x 84-in Raw K-frame Unfinished Knotty Alder Wood Single Barn DoorThe all wood core stile provides incredible strength and durability and all components in the core are finger jointed, not edge glued; finger joints are superior joints as they have greater gluing surface for added strength The outer edge band blends with surface veneers so that the finger jointed core is not visible and the inner edge bands are provided so that no finger joints show in the sticking All stile and rail joints are secured using dowel