High-performance ThermoFlo Ducting is one of the most reliable options
for exhausting warm, humid air from the indoor garden. Featuring
several layers of reinforced metal laminate casing, a smooth
double-sealed interior and galvanized steel coils, this six-inch
ducting is air-tight, puncture-resistant, and easy to install.
Heavy-duty ThermoFlo ducting also assists in keeping noise to a minimum. Sold in 25 ft pcs.