I really like how well your air filters work. I recently had my AC/Heating system inspected and the Tech said my vents were very clean for 8 years old. I change the filters every 6 to 8 weeks depending on the weather. I have allergies and this really cuts down on the dust.
The filters are a little wider and also its hard to pull out and replace the filter because theres no handles or holes for fingers to grab and pull it out