Aerodynamically shaped, stiffened by ribbing, radius > 17,5mm with circulating edge protection.
Casing folded, measurements according do DIN EN 1505, tightness-class B-D DIN EN 1507,
pressure stage M after DIN 3803 for operating pressure -750 Pa to +2000 Pa, silicon-free,
Hygiene requirements acc. VDI 6022, VDI 3803, DIN EN 13779, DIN 1946 T4.
VZ / ALU / V2A / V4A
Powder coating/ Paint finish in RAL-colour at one´s own choice