Used for installation in walls to extract air and can be used in kitchens and bathrooms. Also widely used in false ceilings and walls (gypsum board). 🚩🚩 The size is written on the label = 26.8 - 26.3 - 18.6 cm ✔ Operates in complete silence. Protects against external heat leakage. 🚩🚩 New. Price =