Duct Liner Fire Rating
Duct liner must have correct fire rating for application. Wrong liner rating creates fire hazards.
Stop if
- For this duct liner, what fire rating and certification does spec require? Can you confirm material on site matches?
Watch out
- Don't install liner without verifying fire rating. Don't assume all liner is same. Don't use damaged or unlabeled liner.
Check
- What fire rating does spec require?
- Is liner labeled with UL 181 or equivalent?
- What are flame spread and smoke developed indices?
Steps
- What fire rating does spec require?
- Is liner labeled with UL 181 or equivalent?
- What are flame spread and smoke developed indices?
Say this to your foreman
For this duct liner, what fire rating and certification does spec require? Can you confirm material on site matches?
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