range of Air-Vents ( Fan Filter ) manufactured from Halogen-free ABS which offers superior resistance to chemicals and atmospheric agents ( Operating Temperature -20 C to +85 C ) with EPDM sponge gasketing offer in Colour RAL-7032, RAL-7035, BLACK ON REQUEST. Air-Vents ( Fan Filter ) is used to provide an optimum climate in enclosures and cabinets with electrical/electronic components. The interior temperature of an enclosure can be reduced by channeling cooler filtered outside air into the enclosure thus expelling heated internal air. The resulting airflow own prevents the formation of localized hot pockets in installations and protects electronic components from overheating.