Fire protection damper with mechanical closure for ventilation pipes – EI90 shaft walls from 40 mm thickness and ceiling from 100 mm thickness.
Available in two variations FSA and FSA-ST (with / without pipe type connection). Consist of a housing and damper blades made of galvanized steel with white powder coating.
Dampers can be inserted into any standard Spirotube up to DN160. Tested in EI90-shaft walls with a wall thickness of 40 mm as well as in ceilings from 100 mm thickness, plywood board ceilings from 152.5 mm thickness and EPS lightweight concrete ceiling from 200 mm . Developed for retrofitting into finished air lines, as a retrofit for old and new buildings.