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Author Question: Fiberboard duct is joined A) using the mechanically self-sealing joints formed on the end of the ... (Read 50 times)

chandani

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on: Jul 26, 2018
Fiberboard duct is joined
 
  A) using the mechanically self-sealing joints formed on the end of the duct
  B) with sheet metal screws and mastic
  C) with tape and mastic
  D) with staples and UL 181A tape

Question 2

Underwriters Laboratories standard 181 B covers
 
  A) methods of connecting and sealing flexible duct
  B) methods of connecting and sealing metal duct
  C) methods of connecting and sealing all types of duct
  D) methods of connecting and sealing ductboard


nguyenhoanhat

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Reply #1 on: Jul 26, 2018
Answer to Question 1

D

Answer to Question 2

A


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