The ease of installation is good as it fits my air handler pretty well, and there is a notable improvement in flow for home use when I change them out. I've been using this specific filter for years now and trust its filtration performance because the filter quality is good. The price is a bit high, however the cheaper filters are absolute junk, this one is worth it.

This brand can always be trusted. There’s different grades so consumer can decide what works best for their unit.

Great filter that I couldnt find anywhere. I was so worried I wouldnt be able to find it. Its the preferred filter for our furnace/air conditioner and Ive never had a problem with it. Im so glad I found it here. Thank you very much!!!

Compared prices to Large store brand. cheaper than our local hardware store that recommended this brand.

Dented Box, Dented Filters. While they apparently shipped in a box from 3M, there was a nice crease in the box which ended up creasing BOTH fitlers. Given these filters are 4" in width that's pretty amazing.

Filters are great, Sam's ad not so, the ad stated 2 per club member. Hmmm, is that 2 filters or 2 orders which would equal 4 filters. Well, you guessed it! I ordered 4 filters and yep, Sam's only sent 1 order of 2 filters. Not a big issue, just more clarity would help in the future.

Usually we have no issues with these filters. They worked great in our HVAC system for years. Now with that said my last orders the filters are running smaller. There is a major Gap in with on all sides, I can hear my AC is whistling and I can slide my finger in between the framing, very disappointing. I am afraid to order these again. What’s going on? As you can see I have placed a folded newspaper on top edge and size edge to help it fit and not flop around while the fan is blowing. Hope this doesn’t harm my system. Not have the funds to purchase new ones at this time. My last order was 2 Box purchase a total of 4 filters.

Filters are not 4” they are larger and not noted in the description. Once we received the filters and after opening and attempting to install we found that the manufacturer’s packaging has fine print stating the filters are 4 5/8”. Our unit has a true 4” opening

We ordered the set and it came in damaged. Got with customer service to get a replacement, and the replacement arrived damaged as well

It is 4.25” NOT 4” … it does NOT fit. Looks like a nice filter ifnit would fit!