Bathroom extractor fan
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I’ve just purchased a light switch operated, extractor fan with 30 minute overrun for installation in a rental flat https://www.amazon.co.uk/gp/product/B01I8N0QFE/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
£55 it says it extracts at 75M3/hr about 23l/s
Make sure to use ridged ducting and that the overrun is set to 30 minutes.