Review on Flintar BS-03 3-in-1 H13 Grade True HEPA Replacement Filter, 2-Pack – Compatible with PARTU BS-03 HEPA Air Purifier by Robert Hayes

The filter does exactly what it is supposed to. My only criticism is that they are bloody expensive for how often you have to replace them. I started using an air compressor and thoroughly blown all the dust out of the filter a couple of times before actually spending the money on buying replacements. The effectiveness of the filter for things like allergies and viruses is reduced, but it can be used if you're just trying to reduce dust in the air like I was doing.