Apprentice question
Verify first
Verify before you commit. Cheap to catch now.
Cold intake sleeves through humid spaces need insulation/vapor control. Dry the metal, seal air leaks, and wrap the sleeve with the approved vapor-tight insulation detail.
['A fresh-air sleeve can carry cold outside air through a warm humid plenum. If the metal sleeve is exposed, humid air can condense on it and drip onto ceiling tile or drywall.', 'Check for missing insulation, open vapor barrier seams, air leaks, and cold metal contact. Wrap/insulate the sleeve per the mechanical insulation spec and seal the vapor barrier continuously so humid air cannot reach the cold metal.']