Good quality Air filter

These meet the quality I expect when buying a thicker filter. With the 1 inch filter, I don't expect them to last long, but the 4 inch filters last for three months under normal conditions. This gives me peace of mind knowing our home is as dust free as it can be, and the heating and cooling system isn't just moving dust around the house.

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.

Buyers beware: The actual size of the 16x20x4 was reduced at some point last couple of years. As the result it doesn't properly fit in Honeywell / Lennox filter boxes, despite the advertisement on the packaging. The filter size used to be 15-7/8" x 19-7/8" x 4-5/16". The new filter size is 15-7/16" x 19-3/4" x 4-5/16", so it is 7/16" (1 cm) narrower than the old filter.

[This review was collected as part of a promotion.] Good product and it fits my furnace.

Great product. Order online and pick up at store very convenient.

Did not fit

This is the ONLY filter I have been using last several years. Replace twice a year, your furnace and house air will thank you !

[This review was collected as part of a promotion.] I've used this brand in the past and this version is an upgrade at almost no increase in price.

gives clean fresh air.