3 Round Flat 65mm Stainless Steel Air Vents for Caravans Camper Day Vans VW Vito
(Brighter than the picture shows). On the inside of a window, on a tile, under a cupboard ?. Easy to fit, cut or drill a 54/55mm hole which leaves a 5mm wide inner edge all around that can be sealed with a flexible adhesive /sealant.