Best used for your grow room intakes: where air is being drawn in from outside and the difference in humidity between the outside air and inside air is great.
The insulation will cut down on the amount of condensation that forms on the outside of the ducting, this is especially helpful for those of you who air-cool your lights.
The ducting is designed to be highly resistant to corrosion and ideal for industrial use inside grow rooms and tents. Such environments need foam-coated ductwork panels with aluminium to prevent moisture from corroding the ducting.
Aluminium ducting is especially important in hydroponics because they are less corrosive compared to other ductwork products.