Describe how sheet metal ductwork is sealed
What will be an ideal response?
Mastic is the main sealer. UL rated duct tape is sometimes used in addition for larger holes.
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There are ____________________ chapters of the FFA in the United States
Fill in the blank(s) with correct word
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The EPA sets the standards for contaminant levels in our drinking water that are considered safe to drink.
a. True b. False
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How much outside air should be admitted to a space?
What will be an ideal response?
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To prevent water from flooding out the opening when the plug is removed, a _____ can be attached to the test plug
A) retainer plate B) water removal plate C) retainer ring D) large wing nut
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