Does anyone know of a blind manufacturer (not luxaflex) who is making a top down venetian? If not, a venetian with dual control, where you can open the slats in the upper blind and keep the bottom slats closed for privacy?? These would be perfect to allow maximum sunlight through a bathroom window (even hitting the roof), and even when showering. Mould prevention is the objective here. These are readily available in the UK AND US but I havent found them here yet.