When To Use Metal Instead Of Flex
Flex where metal is required by spec/length
Green / Field Check1stBatch 5
What This Helps With
Flex where metal is required by spec/length
Apprentice words: flex or metal
Trade terms: flex vs metal, hard duct required
Check First
Spec limits on flex and required metal runs
What Not To Do
Replace specced metal with flex
What can go wrong: Defaulting to flex for long runs
Better Foreman Question
Does the spec allow flex here or does it want metal?
Verify With
Reference type: project spec
Source to verify: Spec; energy code
Safe wording: Per spec.