The KE-DireJet® System is produced in the following configurations: round (Ø), half-round (D), or quarter round (½D) ducts and is made of a permeable textile material with rows of conical nozzles for active and directional delivery. From a ventilation technology perspective, the KE-DireJet® System can be regarded as an active high impulse system for mixing ventilation. KE Fibertec is the only distributor of fabric ducts that offers five different nozzle sizes ranging from ½”-2½”.