Master Flow 4 in. x 25 ft. Insulated Flexible Duct R6

Insulated Air Duct, 4″ x 25′

• R6 fiberglass insulation for greater insulating power
• Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
• Oversized core to connect quickly and easily to standard sheet metal fitting
• Galvanized core wire for greater corrosion resistance vs. non-galvanized wire
• Duct can be cut to length as needed
• Insulated duct features a maximum temperature rating of 200 degree F
• Always install per instructions and seal using approved mastic or sealant (or approved tape)

Metalized jacket, single strand fiberglass yarns for added strength and tear resistance. 2 in thick glass fiber. Two-ply continuous inner core products, smooth interior for more efficient air movement. Two-ply continuous inner core products, smooth interior for more efficient air movement. Vapor barrier, durable and scuff-resistant jacket. Zinc-coated, high-carbon steel wire helix. Thick, continuous blanket of glass fiber insulation. Metalized single-strand fiberglass yarns for added strength and tear-resistance.