TinnerFlow™2nd YearDampersRED · Stop / Verify
It floats. The fire damper sleeve itself must never be anchored directly into the concrete, masonry, or drywall studs. It is held in place purely by the sandwiching clamping force of the retaining angles touching the outer faces of the wall. This allows the duct to expand or collapse during a fire without tearing down the wall structure.
It floats. The fire damper sleeve itself must never be anchored directly into the concrete, masonry, or drywall studs. It is held in place purely by the sandwiching clamping force of the retaining angles touching the outer faces of the wall. This allows the duct to expand or collapse during a fire without tearing down the wall structure.
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.