Butterfly fireproof dampers EI 120 S :
diameters: ø 100–200,
twin-blade design,
CE certified acc. to EN 15650,
galvanised casing,
tested in accordance with EN 1366-2, classified acc. to EN 13501-3+A1,
fire resistance EIS 60, 90, 120,
corrosion resistant acc. to EN 15650,
with fusible link 72°C,