SIEGENIA-AUBI:AEROPAC Wall mounted ventilation unit.Highly effective sound absorption for peaceful, quiet sleep Draught-free ventilation, almost silent LCD: air flow setting and programmable timer Slider on the side for individual air control 3 optional filters: coarse dust, activated carbon, fine dust and pollen filters Filter cassettes and a change indicator make changing the filter easy Extremely small dimensions and elegant, high-gloss casing Can be subsidised up to 100 %, 5 year product guarantee Can be ontrolled via Z-Wave wireless system