4 panels white shutter doors,hinged-fold,two left,two right, without frame,without tracks

4 panels white shutters,hinged-fold,two left,two right,hinged on the original door frame,

because the room is not big, so this is the option for 4 thin panels, so they may not need more room for the shutter doors when open(too wide for 2 panels)

and for the bi-fold panels need extra cost for the tracks, but this one only used hinges,save more money.