Fire Damper Sleeves And Breakaway
Wrong sleeve gauge, non-breakaway joint, angles missing
Red / Stop And Verify3rdBatch 4
What This Helps With
Wrong sleeve gauge, non-breakaway joint, angles missing
Apprentice words: fire damper
Trade terms: fire damper, sleeve, breakaway connection, retaining angle
Check First
Listed installation details: sleeve, breakaway, retaining angles, annular space
What Not To Do
Substitute the sleeve or skip retaining angles
What can go wrong: Hard-connecting where breakaway is required
Better Foreman Question
Do we have the listed install detail for this fire damper?
Verify With
Reference type: NFPA 90A
Source to verify: NFPA 90A; UL 555; manufacturer listed install; AHJ
Safe wording: RED ZONE. Install strictly per the listed manufacturer detail and AHJ; TinnerFlow only points to the listing.