How should fiberglass duct wrap be applied over duct ribs?
a. Pack the voids under the duct wrap with scrap insulation.
b. Allow the duct wrap to blouse over the rib.
c. Cut additional pieces of duct wrap to fit over the rib.
d. Stop the insulation at the rib then continue applying insulation to the other side.
b. Allow the duct wrap to blouse over the rib.
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