A converter made to connect a flat duct (220 x 54 mm) with a round duct (diameter of 125 mm). It is easy to install and can be made airtight by using tape.
Please note. If you want to connect a ventilation duct of 125 mm, you need this pipe connector.
The bend is white and made of white lightweight plastic. It has a smooth inside to minimise air resistance. Resistant to temperatures from -30 °C to +70 °C.