We have a 'vent axia' style (no brand on it that I can see) through the wall fan for a bathroom with an air operated louvre vent on the externals - the problem being that we live next to a lot of fields and every time there is a gust of wind (frequently) the louvres open and a galloping gale comes through the fan making the bathroom and adjoining rooms freezing - so - is there a fan/vent combo (for a very small loo but fitted with a shower) where the louvre vents are either powered or are designed to stop the air getting in (although obviously not it getting out when the fan is in operation)?
thanks
