Additional permanent ventilation with internal grid in the sanitary and kitchen areas. Fixing with sheet metal screws/Spax: Ø 3.5 mm x length (roof thickness less than 5 mm).
Technical data:
For roof thicknesses: from 25 mm
Ventilation width: Ø 100 mm
Roof cutout: Ø110 mm
Inner grid: 2×2 mm
Ventilation cross-section: 16 sq m
