Profile: Barcol-Air UK Ltd. specializes in air distribution products. Our product line includes linear slot diffusers, perforated face ceiling diffusers, louver face, circular and swirl diffusers, variable & constant air volume terminals, air measuring & pressure control units, and fan coil units. Our constant air volume systems are used on medium projects to supply regulated air requirements to each zone or floor, as well as extracting used air from the building. Our rectangular fan assisted variable air volume(VAV) terminals are complete with reheat coils and sound attenuator sections, and they also offer constant air volume.