This high quality with regard to airtightness reduces the heat loss through the non-operating extractor hood in the aforementioned pressure range almost zero compared to the other wall boxes tested.
The new Naber catalogue is due to be published on 01.04.2023 - look forward to a host of newcomers! Until the end of March, the 2022 catalogue is still valid as the current price list. The requested print folders 23/24 will be sent out from the middle of March.