FANS FOR AIR-CONDITIONING INSTALLATIONS, NAMELY, EXHAUST FANS, CONE FANS, AIR RECIRCULATION FANS, AIR BLOWER FANS, PANEL FANS, BOX FANS, EXTRACTION FANS AND JET FANS; AIR-CONDITIONING FANS IN THE NATURE OF EXHAUST FANS, CONE FANS, AIR RECIRCULATION FANS, AIR BLOWER FANS, PANEL FANS, BOX FANS, EXTRACTION FANS AND JET FANS; AIR FILTERING INSTALLATIONS, NAMELY, EXHAUST FANS, CONE FANS, AIR RECIRCULATION FANS, AIR BLOWER FANS, PANEL FANS, BOX FANS, EXTRACTION AND JET FANS; AIR-CONDITIONING APPARA...