The drawing shows a return air duct tag labeled P-60 with a dimension of eight inches alongside a structural grid bubble A. Vertical dimensions indicate a total height of four feet three and one-half inches, broken down into segments of two feet zero inches and two feet three and three-quarter inches. Additional offset dimensions of three-quarter inch and two feet three and one-half inches locate the duct alignment. The layout provides placement and sizing information for mechanical routing coordination.
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