Essential starter kit for exhaust air with piping. Includes:

• 4 high-performance, low-noise acoustic filters for significantly reduced noise levels and noticeably improved psychoacoustic characteristics.
• A sealing flange that can be attached to a flat male duct before inserting the component into the device to ensure airtightness (the air outlet at the back of the device can be accessed directly with a flat male duct element DN 150).