Duct hole through support beam

Acknowledging that it’s foolish to rely on internet advice about structural matters, I would appreciate some advice on a structural matter.  I’m installing a concealed duct minisplit underneath a floor,… Acknowledging that it’s foolish to rely on internet advice about structural matters, I would appreciate some advice on a structural matter.  I’m installing a concealed duct minisplit underneath a floor,…Read MoreGreenBuildingAdvisor