Additional permanent ventilation with internal grille in the sanitary and kitchen area. Fastening by means of sheet metal / spax screws: Ø 3.5 mm x length (roof thickness minus 5 mm).
Technical data:
For roof thicknesses: from 25 mm
Ventilation width: Ø 100 mm
Roof cutout: Ø110 mm
Internal grid: 2x2 mm
Ventilation cross-section: 16 qcm
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