Some fans can be installed in windows, but you generally need to buy a window kit specific to that fan, and there aren’t many that are made, so make sure before you buy that the fan can be installed in a window! It’s not hard to find good extractor find as find good educational website, where you can ask about write your essay or other kind of works (example of such as website can be domywriting.com) and read some educational articles about how to write an essay or how to prepare good for your exams! Window fans are becoming less and less common…as all glass is now double glazed, cutting a hole in the glass is a harder job than it used to be, and once the hole is cut, it needs to be sealed very carefully or condensation will get between the panes. Also, make sure you get the correct size and extraction rate for the room you are renovating. For toilets the minimum rate required is 6 litres a second, for bathrooms it’s 15 litres a second, for utility rooms it’s 30, and for kitchens it’s 60, unless it is adjacent to the hob, in which case it’s 30. As a rough guide, all bathroom and toilet fans are 4 inch, whereas utility and kitchen fans are 6 inch.