Imperial® MEA-0425 Polyester Air duct, 4 in ID x 25 ft L, Polyester/Fiberglass

Item Features

• Designed for wherever UL 181 standards for Class 1 Air Duct is required.
• The 2-ply polyester laminated inner core provides outstanding resistance and durability
• The fiberglass reinforced metalized outer jacket is extremely strong and will not unravel
• Suitable for use with heating, ventilation and air conditioning systems