Filters are equal quality as 3M at a fraction of the cost.
We just installed the new filters. The quality appears to be better than anything we've used so far. We wanted to protect our new HVAC purchase and was looking for quality filters. The only issue was that we thought the package was arriving at our home since they required the street address for shipping. Most mail and packages are delivered by USPS to the post office box number but Automatic Filters required a street address. The delivery truck took it to the post office rather than the street address. It would have been nice to know but certainly not a deal breaker - more of an issue with the delivery company. Hope they work as nice as they appear.