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Sheet Metal
Sheet Metal Worker Red Seal Certification
Duct Connections & Sealing
Knowledge Check
Duct Connections & Sealing
Knowledge Check
Knowledge Check
1 / 10
What is the purpose of duct reinforcement (angles and tie rods)?
A
To connect insulation
B
To prevent duct walls from bowing outward under positive pressure or collapsing under negative pressure
C
To support duct hangers
D
Decoration
Check Answer
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