Primeline (Manrose) Window Extractor Fan With Pullcord & Automatic Shutter 6\" 150mm British Made Suitable For Kitchens, Utility Rooms And Larger Bathrooms 64 Litres Per Second, 220m3 Per Hour Extract Capacity. 40db(A) @ 3m . 25w Power Consumption. Automatic Electrically Operated Back Draught Shutter With Silent Operation, Closes Automatically When Fan Is Switched Off. Requires A 184mm Diameter Hole. The Glass Thickness Can Be 4 To 22mm Thick Although You Can Use Longer Screws Of The Same Gauge To Bridge Larger Gaps If Required. Supplied Pre Flexed. This Fan Is Normally Wired Up To A Nearby Spur Connection Unit, Or Lighting Circuit Or A 13 Amp Plug Can Be Fitted (Requires 3 Amp Fuse). It Is Single Speed. Dimensions: 205mm High X 205mm Wide X 101mm Deep (Inside) And 25mm (Outside If In Glass)"