Hob Extractor Fan Vent Adapter

I needed an adaptor to attach standard 220mm x 90 mm extractor pipe fittings to my Neff hob extractor fan outlet. This print aligns with the holes in the duct supplied by Neff with my hob. Screws put through the Neff fitting and the back of the cabinet engage in the tabs on my print to hold it all together. Then standard 220 mm x 90 mm female duct fittings can be attached to it.