PVC Strip Curtain for Dust/Temperature Control Euronics PVC Strip Curtains are made from specially developed PVC material, which offers a cost effective and a simple way to control temperature, humidity and prevent the ingress of dust and insects. What does an air curtain do? Air Curtain Manufacturer & Supplier The strength of the air prevents dust, flies and other small insects from entering the air-conditioned area. It acts as an air wall by separating and maintaining the temperature between the two partitioned spaces.