Air cooler of hinged type HBO (model PKN 450.812.635) Air cooler of hinged type HBO (model AKN 363.810.1229) Air cooler of hinged type HBO (model ADN 456.812.635) Air cooler of hinged type HBO (model PKN 356.810.926) Air cooler of hinged type HBO (model ADN 450.1210.535) Air cooler of hinged type HBO (model ADN 250.128.419) Air cooler of hinged type HBO (model ADC 263.88.419) Air cooler of hinged type HBO (model ADN 450.810.535) Air cooler of hinged type HBO (model PKN 150.58.69) Air cooler of hinged type HBO (model AKN 263.128.1219) Air cooler of hinged type HBO (model PKN 363.88.1229) Air cooler of hinged type HBO (model AKN 163.128.129)