Home / Ventilation / Roof Ventilators / Flettner Ventilator adaptor Flettner Ventilator adaptorPart No. 1999£10.83 Flettner Ventilator – adaptor in black plastic Adaptor for double skinned roofs up to 50mm thick. Fits Part No’s. 2000 & 2000W Flettner Ventilator adaptor quantity Add to cart SKU: 1999 Categories: Roof Ventilators, Ventilation Tag: Flettner Related products Intake/Extract VentilatorPart No. 370-1 £48.12 Add to cart Glass Top Roof Hatch 591X 591mmPart No. 821530 £188.40 Add to cart Interior GrillePart No. 353-6 £10.48 Add to cart Interior Grille – stedventPart No. 353-4 £13.29 Add to cart