Adjustable cone circular diffuser The DCG series diffusers are designed to be used in air-conditioning, ventilation and heating in different premises from 2,6 metres high. They can be mounted in false ceilings, suspended from ductwork or from the ceiling. The air pattern can be modified, altering it by means of its inner adjustable cones, ranging from horizontal projection to vertical projection, providing good performance qualities for temperatures differentials up to 12ºC.