This is a good quality product. The frame of the filter is a sturdy moulded item. The filtration material is dense, free flowing with plenty of carbon to absorb vapours.. (Previously used other filter which had a folfed plastic frame of little strength, the long side bowed out of shape when correctly installed! The filtration material was thinner.) Filters are not all the same. . Im my opinion, this is a good quality item...
I have used this product over a number of years for my rover . It is good quality at a reasonable price . As a sufferer of hay fever in summer the windows are closed and the filter does its job.