... golden oak, dark oak, walnut,,etc.)100% opening,largest space,Freedom from noise,dust and pollution,Easy clean,Superior aesthetics2.Profiles ... bifolding doors3 panel bifolding doors is 2100mmx1800mm,4 panel bifolding door is 2100mmx2700mm,5 panel bifolding door is 2100mmx3600mm,6 panel bifolding door ...