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EnviroVent SIL100T12V Silent Extractor Fan 100mm Model comes with Backdraft Shutter/Timer SELV 12V - John Cribb & Sons Ltd, UK Electrical Distributors, Dorset, Hampshire, Wiltshire, Somerset & the Isle of Wight.
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Airvent 434399 Low Voltage Axial Extractor Fan & Transformer Kit (Timer Model) 100mm 4 Inch SELV 12V. Suitable for use within Zone 1 : Amazon.co.uk: DIY & Tools
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Vent-Axia 258110 VA100SLV12 White Unshuttered SELV Axial Extractor Fan With Remote Transformer For Remote Switching IPX7 12V - Internet Electrical
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