Master Flow 12 in. Dia x 5 ft. Length Ductwork Insulation Sleeve - R-8

Insulate your new or existing 12 in. duct pipe with this Master Flow 12 in. Dia fiberglass insulation ductwork sleeve. Helps provide consistent air temperature and reduced system condensation and noise. On new pipe installation - simply slide the sleeve over the 12 in. duct pipe as it is being installed. For existing duct pipe up to 12 in. Dia - cut the jacket length wise (insulation is pre-cut) and wrap around the pipe.