Additional information:High-efficiency long life motor rated up to 40,000 hours run timeVariable speed adjustment at installation12dB noise levels (quieter than rustling leaves)Extraction rate of 22 litres per secondIPX5 rated means the fan is protected from water jets that are projected by a nozzle (6.3mm) from any angleMeets current Building Regulations Approved Document F and LSuitable for wall, ceiling, window and panel mounting mountingBack draught shutters included5-year guarantee Axial  Axial type fans cause gas to flow through in an axial direction which is parallel to the shaft where the blades rotate, making the flow axial at exit and entry. Axial fans are designed to create a pressure difference and force which produces a flow through the fan. Timer controlled Extractor fans with a built-in timer control means that the fan will operate with the bathroom light switch and then overrun for a set amount of time to continue removing moisture from the air. This is great for steamy bathrooms, allowing you to turn the light off but continue with extraction for a short time.   Zone 1 Rated IP rating stands for 'Ingress Protection rating' and this helps us determine what bathroom electricals can go in particular bathroom zones. An IP (Ingress Protection) number or code is used here in the UK to specify the environmental protection of enclosures around electronic equipment. These ratings are determined by specific tests. These extractor fans can be fitted within Zone 1 as shown below. Recessed wall & ceiling installation These extractor fans can be installed through a wall or recessed giving you that extra bit of flexibility. They can also be installed as portrait or landscape.