VENTILATION HARDWARE FOR CEILING

摘要

PROBLEM TO BE SOLVED: To provide ventilation hardware, easily installable in a ventilation place such as the ceiling with an excellent appearance, capable of preventing complete closure of a ventilation passage in a fire, and inexpensively mass-producible.

SOLUTION: This ventilation hardware is constituted so that a side plate 3 is respectively and continuously arranged on both ends of a horizontal upper plate 2; a collar plate 4 is formed in a horizontally continuously arranged cross section of a hat shape on the outside of the lower end of this side plate 3; the side plate 3 is divided into an upper inclined face 3b and a lower inclined face 3c by curving a central part 3a of the side plate 3 in an outward angle shape; and a plurality of ventilation slit holes 5 are juxtaposed and bored in the longitudinal direction on the upper inclined face 3b.

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