These branch plates have an angle of 45° to enable you to easily add another section to your existing extraction system. Carefully select the two diameters, i.e. the one to be attached to the existing ductwork, and then the one chosen for the extension of your extraction system.

The advantage of using this part is that you do not have to dismantle the existing ductwork to add the ‘graft’. Simply place it where you want it, trace the opening to be made in the existing ductwork through the inside of the branch plate, cut the sheet metal, then fix the branch plate in place with self-drilling screws and/or silicone.