7
Heat exchangers [parts of machines]; Heat recovery devices [parts of machines]; Drum filters; Filter presses; Filters for machines; Filtering machines; Filters being parts of machines; Fans being parts of machines
11
Heat exchangers, other than parts of machines; Shell heat exchangers; Heat exchangers for fireplaces; Heat exchangers for the removal of exhaust gases; Heat exchangers for the removal of flue gases; Heat exchangers for central heating purposes; Fans [air-conditioning]; Filters for air conditioning; Mobile air conditioning apparatus; Motorised fans for air conditioning; Ventilation [air-conditioning] installations for vehicles; Filters for use with apparatus for air conditioning; Air filters; Air filtering installations; Filters for gas extractors; Filters for cleaning air; Power filters for airconditioning; Filters for fume extractors; Filters for air purifiers; Filters for refrigeration systems; Heating, ventilating, and air conditioning and purification equipment (ambient); Air-conditioning installations; Air-conditioning apparatus; Central heating apparatus; Heating apparatus; Underfloor heating apparatus and installations; Steam heating apparatus; Electric space heaters; Heating and cooling systems for motor cars; Extractor fans; Aeolian ventilators; Roof fans; Room air fans; Radial air fans; Ventilating exhaust fans; Suction ventilators; Axial fans; Electrically powered fans for ventilation purposes; Table fans; Fan heaters; Electric window fans; Ventilating fans for use in vehicles; Portable electric fans; Ventilators for automobiles; Ventilators for heat exchangers; Ventilating fans; Ventilating fans for industrial use; Ventilating fans for household use; Installations for air extraction; Air sterilizers; Installations for the cooling of air; Air cooling apparatus; Heat pumps; Heat regenerators; Heat accumulators; Air heat recovery installations; Apparatus and installations for ventilating