Hi Does anyone have a recommendadtion for a good (by which I mean powerful quiet and reliable) extractor fan. I'm fitting a range cooker and am going to build the cowel. I'm looking for a good quality wall mouned extractor. I'm exhausting directly through the wall to the outside but the cowel is going to be big. A sort of mock englenook chimney but where the front lifts out to form the 'hood' when its in use. The cowel is going to be about 4ft wide and about a foot deep. Its also going to be about 6ft up the wall so I don't hit my head on it. I'm looking for something that has several speeds but that will pull at least 60 ltrs/sec. Any suggestions will be welcome.