Not knowing difference between fire, smoke, and combination damper

Fire, smoke, and combination dampers are not just fittings. If the type is unclear, slow down and protect the label, access, blade path, and actuator side.

Fire/Smoke Dampers & Rated Assemblies 4th Year RED

Stop if

Ask when access is missing/blocked, damper type is unclear, rated construction is involved, or manufacturer/AHJ detail is not known.

Watch out

Do not treat damper or rated-assembly work like normal duct. Do not swap damper types because the opening size looks close.

Check

Find the label/tag and access side.
Look for actuator, fusible link, sleeve, retaining angles, or blade path.
Do not cover labels/access or assume all dampers follow the same rules.

Steps

Find the label/tag and access side.
Look for actuator, fusible link, sleeve, retaining angles, or blade path.
Do not cover labels/access or assume all dampers follow the same rules.

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In Fire/Smoke Dampers, Access Doors & Rated Assemblies, I'm looking at: Not knowing difference between fire, smoke, and combination damper. What should I verify before I cut, drill, seal, cover, move, or install?

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