| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a duct and a hanging metal piece for it economical and easy to mount, capable of establishing fast mounting without risk that the duct body and the hanging metal piece move and performing the mounting using a fastening bolt used in the duct body. <P>SOLUTION: The duct body of this duct is to fasten at least its quadrangular part through a gasket to a commonly used plate flange or an angle flange using bolts, wherein the duct is composed of a hanger having bolt inserting holes and hang-down rod inserting holes to be fixed at least to the left and right ones of the four bolts which are to fasten the four corners of the duct body and the hanging metal piece which is supported by the bottom inserted to the hanger hang-down rod inserting holes and whose top consists of a hang-down rod attached to a ceiling material etc. <P>COPYRIGHT: (C)2004,JPO |
