3M 25X25X1 BASIC AIR FILTER FBA15DC-6 Pack of 6

Been searching high and low for a polyester filter that flows as free as possible. Too many people get hung up on what the filter will filter out and forget that a furnace has to breath too. Otherwise the blower motor works too hard and is more apt to burn out as well as the a/c a-coil being more prone to freeze up. Do some internet research. My furnace has a static pressure issue ( more furnaces do than people realize) and wanted something better than the spun fiberglass filters that dont really filter- you can pour salt right thru them. This filter fits the bill... The merv 5 rating (3m equivelant of 100 in their rating system) is the only merv 5 that the big box stores sell in my area. Just wish they would go back to the standard 'boxed' framework that seals so much better. Give them a try and see if you dont get better airflow thru your discharge vents and save on your bill sinc ethe blower dosent have to work so hard.

I have been buying these filters for 10 years and have loved the quality, what they catch and the cost for a 3 pack. I always get two packs to have 3 changes. I change them between 2 to 3 months apart regularly. However; since the change that was made in their actual "1" inch width NOT so satisfied with the 3 Pack anymore. They are so thin they whistle ALL the time and it is so annoying when trying to sleep. I haven't given up on Filtrete yet, I returned the unopen packs I had and purchased a 2 pack 1085 Micro Allergen Extra with a true "1" inch edge/rim. I sure hope they are quiet like the other filters used to be when they were thicker. Unfortunately they are twice as expensive. Love to see you change the thickness back and even you had to raise the cost just a little.