安装便捷，施工周期短只有传统镀锌铁皮风管的1/5，现场改动很方便。
Easy installation, a short work cycle only traditional galvanized iron sheets duct 1 / 5, the scene changes very convenient.
通风管采用镀锌钢板制作，风管与风井连接处缝隙应用不燃材料填实。
Ventilating tubes are made of galvanized steel plate, the gap between the joint of air tube and air well should be filled with incombustible materials.
外壳：采用优质热镀锌钢板制成，具有优良的耐大气腐蚀性能，进风口和出风口外形尺寸相同，可与风管直接相连，以便于安装。
Housing: Galvanize steel sheet material could be able to bear corrosive. Same size for the inlet and outlet can install conveniently. Connecting to the piping directly makes for installation.
外壳：采用优质热镀锌钢板制成，具有优良的耐大气腐蚀性能，进风口和出风口外形尺寸相同，可与风管直接相连，以便于安装。
Housing: Galvanize steel sheet material could be able to bear corrosive. Same size for the inlet and outlet can install conveniently. Connecting to the piping directly makes for installation.
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