Rigid duct is almost always preferable to flex duct, but if flex duct must be used insulated flex duct is preferable to uninsulated duct.
Rigid duct is almost always preferable to flex duct, but if flex duct
must be used insulated flex duct is preferable to uninsulated duct.
When installing flex duct take care to avoid dips, sags, and bends as
much as possible, since poorly installed ductwork will reduce
performance of the heating, cooling, or ventilation system. This is
particularly important with longer duct runs, as flex duct has twice
the resistance to air flow compared to rigid duct. In other words, the
airflow resistance created by 1 foot of flex duct is equivalent to the
air flow resistance created by 2 feet of rigid duct.
This insulated duct consists of a strong polyester film laminated and
encapsulating a heavy, corrosion resistant steel wire helix, that forms
the inner core and supports a 1.5" thick blanket of fiberglass
insulation (R-4.2) over a fiberglass scrim. The outer vapor barrier is
a jacket of durable black polyethylene. It is designed for low to
medium pressure systems, with airflow velocity up to 5,000 feet per
minute.
- Manufacturer Warranty: 5 years
Our Price:
$27.94
|