Knut Bø FB100H is a matt black front cover for the Muro-Style 100MHT and 100MHY wall-mounted extract fans, matching the 100 mm nominal duct diameter of the range. Snap-fitted over the standard cover, it substitutes the visible fascia to suit dark interior finishes. Manufactured in Italy. Typical applications include bathrooms, utility rooms, and other interior spaces where the ventilation grille must match a black or dark decor scheme.