rectangular, welded, for outdoor air and exhaust air, resilient against wind and driving rain,
casing with water collector and drain, top side with perforated metal plate QG 10/12,
demountable, specially formed interceptor profiles with tilt angle. free cross section approx. 50%
Materials VZ / ALU / V2A / V4A Powder coating/ Paint finish in RAL-colour at one´s own choice