When joining rigid fiberboard duct modules, the end flaps are ...

[V@ndy87]

When joining rigid fiberboard duct modules, the end flaps are secured with _____.
 
  a. 1-inch staples approximately 2-1/4 inches on center
  b. 1-inch outward clinching staples approximately 2 inches on center
  c. 1/2-inch outward clinching staples approximately 2 inches on center
  d. 1/2-inch stainless steel staples approximately 2-1/2 inches on center

Question 2

When heat-activated tape is used for duct closure, before applying any sort of stress, all joints and seams
  should be allowed to cool to a temperature below _____.
 
  a. 100F
  b. 125F
  c. 150F
  d. 175F

[fatboyy09]

Answer to Question 1

c

Answer to Question 2

c

[V@ndy87]

TYSM

[dantucker]

Excellent