What is the purpose of a duct stretcher?

A) To pull rectangular duct together when using drive cleats
B) To pull flexible duct straight
C) To increase the length of a sheet metal duct when it is within a 1/4 in.
D) There is no such thing as a duct stretcher


A

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Fill in the blank(s) with the appropriate word(s).

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What will be an ideal response?

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"Lines of explosion" is another term for ____.

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