Constructed of extruded aluminum bars, slot diffusers can be manufactured as 1-8 slots, with a standard slot width 16mm, 20mm or 25mm. Supply linear slot diffusers include two deflectors per slot with hit & miss damper of perforated strips which is used as equalizing gnd. Return linear slot diffusers are without deflectors but with hit & miss damper. Linear slot diffuser can also be made into comer or curved shape, as per the site measurement. Standard color finish is white powder coating-RAL 9010 or RAL 9016. Other colors are available upon request.