PROBLEM TO BE SOLVED: To provide a folding door of neat design capable of reducing cost.;SOLUTION: In a folding door 1 on the present invention, left-right doors 3 and 5 comprise meeting stiles 23 and 25, and a central stile 7 comprises a depth wall 7b of projecting to one side space from between the meeting stiles 23 and 25 of the left-right doors and one side hand hooking piece 7c of projecting in the lateral direction from one side of the depth wall 7b, and the meeting stiles 23 and 25 of the left-right doors 3 and 5 comprise a panel installing part 41 for installing a panel 29, and comprise the other side hand hooking piece 43 of projecting in the lateral direction so as to be opposed to the panel 29 of the left-right doors 3 and 5 on the other side of the panel installing part 41, and vent holes 45 and 47 are formed in at least one depth walls 33 and 35 of the left-right meeting stiles 23 and 25, and a clearance space S1 between the meeting stiles 23 and 25 and the one side hand hooking piece 7c of the central stile 7 and a finger insertion space S2 between the panel installing part 41 and the other side hand hooking piece 43 of the meeting stiles 23 and 25, are communicated by these vent holes 45 and 47.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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