Verticle and horizontal edgs: hardwood or softwood Core: particle board, Germany core, honeycomb, fir, pine, etc Face: MDF, HDF, or plywood Face veneer: engineered veneer such asoak, cherry, teak, ebony,padauk,etc Size: Customized Fire door and reinforced door are available. Frame: available. MDF+face veneer Fir+ (MDF)+face veneer plywood+MDF+ face veneer) Engineered flush wood door