Apprentice answer

How do I install a retaining angle on a fire damper in a masonry wall

2nd YearDampers, Fire/Smoke & Life SafetyStop / Verify

Position the damper sleeve centered in the wall penetration. Place the pre-formed steel retaining angles (1\frac{1}{2}\text{ in} \times 1\frac{1}{2}\text{ in} minimum) tight against the masonry surface on all four sides of the sleeve perimeter. * Fasten the angles directly to the damper sleeve using approved screws or welds spaced per manufacturer instructions. Do not anchor the angle directly into the masonry wall.

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Plain-English answer

Field checklist

Stop and verify the approved detail, manufacturer instructions, foreman direction, and project specs before touching it.
Position the damper sleeve centered in the wall penetration. Place the pre-formed steel retaining angles (1\frac{1}{2}\text{ in} \times 1\frac{1}{2}\text{ in} minimum) tight against...

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Hey boss, I’m on dampers and need verification before I touch this: How do I install a retaining angle on a fire damper in a masonry wall? Do you want me to stop here and check the approved detail, submittal, or inspector/manufacturer requirement first?

Verify before acting

Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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