FKU90 fire dampers are suitable for independently fire resistant F90 suspended ceilings made of bolted and plastered panel-type building materials. FKU90 fire dampers are manually or electrically actuated by means of a thermal release mechanism in the air flow and subceiling space that triggers at 70°C. An electrical limit switch signals the closed position.
The highly stable, hermetically welded casing is made of galvanized steel with fire resistant insulation and a shut-off damper made of heat resistant, abrasion-proof calcium silicate mounted on one side. The thermally intumescent seals are fibre-free.
All fire damper components that are relevant to safety are easily accessible from the room side for inspection and servicing purposes. Suitable for supply air and exhaust air with various diffuser types. FKU90 fire dampers are available in sizes from 300 mm to 600 mm.