Can mastic be used for duct board that will be used as


1. List the installation methods used to support an electric furnace.

2. Is an electric furnace installation simpler than that for a gas furnace?

3. How are furnace clearances determined?

4. What is the best tool to use for bending a furnace air-supply flange?

5. Can mastic be used for duct board that will be used as plenums ?

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Electrical Engineering: Can mastic be used for duct board that will be used as
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