Main complaint relates to the backdraft shutters which are sprung loaded in the closed position with flimsy bits of plastic film. These were bent when delivered and did not close the shutters at all. Vent Axia replaced them quickly but replacements were the same flimsy and cheap film that will not last long. This is ironic seeing as this is mean't to be an eco friendly low carbon product. The fan may not use much energy but the drafts it lets in to your property have the potential to waste tonnes of carbon over its lifetime.
Rest of the product is made of very thin plastic that flexes at the slightest touch.