Fire Damper Sleeve Requirements
Fire dampers in rated walls require metal sleeve of specific gauge and length.
Stop if
- Required sleeve gauge and length per UL listing? Retaining angles on detail?
Watch out
- Don't install without verifying UL requirements. Don't skip sleeve. Don't use field-fabricated sleeves not matching listing.
Check
- UL listing?
- Gauge and length per listing?
- Sleeve continuous through wall?
- Retaining angles installed?
Steps
- UL listing?
- Gauge and length per listing?
- Sleeve continuous through wall?
- Retaining angles installed?
Say this to your foreman
Required sleeve gauge and length per UL listing? Retaining angles on detail?
More in Fire/Smoke Dampers & Rated Assemblies