The fan can be mounted at any angle. In this kit you will get the following: (if you select 4" you will get 4" grilles if you select 5" you will get 5" etc). Overheating protection. A dynamic balanced impeller.
AirTech-UK - Inline Bathroom Extractor Fan Kit Run on Timer - 4 inches 100mm Duct Opening - High Power – Silent Extractor Fan For Bathroom – 2 Speed - Loft Ceiling Mounted - FlowMax Elite
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Mixed Flow Inline Bathroom Extractor Fan 100mm / Dia 4" - Powerful and Quiet
