Cone diffusers provide quiet, even supply-air distribution for residential and light-commercial spaces. Manufactured from durable white ABS plastic, the adjustable centre cone allows airflow to be fine-tuned for heating, cooling or general ventilation, while the shaped body directs air outward in a smooth concentric pattern across the ceiling. A spring-clip fixing system supports fast, secure installation into plasterboard ceilings, and the lightly textured finish blends neatly with standard ceiling surfaces.