"We wanted a quiet extractor fan for our newly-installed (and compact!) downstairs W.C. and the Vent-Axia 100B didn't disappoint. Set on its faster speed, the fan is incredibly quiet. On its slower speed (which we opted for) it is virtually silent. All the other extractor fans described as 'silent' seem to operate at 25 dB and above, whereas the 100B registers only 16dB. The fan looks very sleek too and, at just £49.99 from Screwfix, was exceptionally good value. For an extra £10 you can opt for the 100T which has a timed run-on (which we didn't want). The only reason I gave the 100B 4 stars instead of 5 for features, was because the speed has to be set during installation. A small switch to change the speed would make this fan perfect - not that it's far from it already! Highly recommended."