DOOR

To restrain a blowout of a flame.SOLUTION: The door comprises a door body having a core material and a pair of a metallic surface material for covering both surfaces in a thickness direction of the core material, a window provided inside than a circumference edge of the door body and a metallic latch mechanism part, the latch mechanism part is provided at a space apart part to a vertical edge of a door end side of the circumference edge of the door body and a vertical window edge of the door end side of the window or below the space apart part, the core material has a first core material provided in a first region above the latch mechanism part and a second material provided in a second region except for the first region and the first core material has a higher fire resistance than that of the second core material.SELECTED DRAWING: Figure 5 【課題】火炎の噴出を抑制する。【解決手段】芯材と、前記芯材の厚さ方向の両面を覆う金属製の一対の表面材と、を有する扉本体と、前記扉本体の周縁よりも内側に設けられた窓と、金属製のラッチ機構部と、を備えた扉であって、前記ラッチ機構部は、前記扉本体の前記周縁のうちの戸先側の鉛直縁部と前記窓の前記戸先側の鉛直窓縁部との離間部、又は、前記離間部の下方に設けられており、前記芯材は、前記ラッチ機構部の上方の第１領域に設けられた第１芯材と、前記第１領域以外の第２領域に設けられた第２芯材と、を有し、前記第１芯材は前記第２芯材よりも難燃性が高い。【選択図】図５