GeneralAire6FM2025 Reservepro-2PK- 4551 Air Filter-20x 25x 5-for Old 4501-Exact Dimensions are 19 5/8x 24 3/16x 4 15/16

Filter fit perfectly in our generalaire system!Ohio Supply got it out very quickly! Great value through them as well!As everyone says, measure, measure, measure!

I don't really know quite what to say about an air filter. However, I had a top-of-the-line HVAC system installed last month. The contractor installed this Generalaire air filter. It is the same brand as the "air filter box" installed as a part of the system. He pointed out the foam rubber gaskets on the filter, and how the new air filter fits in place in a tilted position. I had a sixteen year old system with a MERV 12 filter and questioned that this was "a lesser" MERV 11 filter. He said that "over-MERVing" the air filter overly taxes the HVAC system over time for minimal to no benefit. I initially was going to buy the MERV 13 version, but decided to go with the expert recommendation of the HVAC contractor. The filter pack arrived in perfect condition, and the price was reasonable when compared to similar filters.

Exact replacement. My only question is they seem to be my only choice as far as size/ merv# is concerned.

Shipped in a timely manner and worked perfectly in my HVAC.

Shipping was fast, and the filters arrived in perfect shape. Very Pleased with everything. Would go to this company again.

This was only my second time to change the filter in my recently replaced furnace. The first time, I found it at my local hardware store with a $40 price. This time I checked everywhere and couldn't find one anywhere else, and their price was up to $48. Last resort before going there again, I checked online and found these, much cheaper, and got them the next day. They're great quality, seem to be working just fine. I like the 2-pack, I won't be scrambling next time to get one.It was packaged well, arrived in perfect condition.

These are great filters for my AC system. They are exactly the size that I was needing at a great price.

The Generalaire name brand is the best choice for something as important as your furnace filter. Price was good for the 2-pack, shipping was fast, and the filters arrived in perfect shape. New homeowners--be sure the airflow arrow points toward the furnace when you replace the filter (furnace on the right in the picture). The filter will slide in smoothly if it is on track. I got the top of the filter slightly off track and it got stuck; I crushed part of cardboard frame pulling it out. Will be more careful at the next change in 6 months.