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  1. buzzC2

    question about the TJ joist in wood apartment

    I believe in some jurisdictions the joist bay may be wrapped with sheetrock and fire taped so there is GWB on 3 sides and open on the bottom. If the joist space doesn't end at a rated wall, you would need to have the end of the channel sheetrocked/taped. The duct would then be placed inside the...

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