🌬️ Enhanced Filtrete Allergen Defense with Uncompromised Airflow: Ultimate Air Quality Solution Review

Great alternative to expensive Honeywell filters. Suitable for Honeywell F100 series, original filter no. FC100A1029. FYI is MERV 11 filter.

I'm sorry I didn't read the reviews first because when I tried to install it (I have a lot of filters in this system changed), it just didn't fit. When I measured all four I found they were 4.5" deep. Other sizes are fine. It would be a mistake to advertise them as 4" deep. Now I have three perfectly packaged filters that don't fit and one that's slightly torn and they're too clumsy to send back.

I don't know how long they will last but there are some design issues. There are no finger cutouts on the side to pull the filter out of the housing. Had to pull out with pliers. It fits very snugly to the wearer. Second, the arrows are not on the short side that is visible after the filter is installed. (I used a marker to draw arrows and mark the install date.) It would be nice if they were shrink wrapped separately so the second one is stored and clean for another six to 12 months.

We moved into a house with an old Honeywell electrostatic air filter from the 1980's. It might have worked once, but it definitely didn't work anymore. There was a thin filter in the shaft in front of him, but it wasn't very effective. The smart guys at 3M designed this paper filter to fit perfectly in the ESP chamber. Ours lasts about a year just for heating. Retrofitting technology has rarely worked so easily and so well.

The carton dimensions show the filter size is 20x25x4. Each size is approximately half an inch larger than listed. I didn't notice a slight difference before installing it and now this filter is stuck in my filter box as it got caught on something inside. I have to cut it open to get it when I change it. I'm not really looking forward to it because I have to run the vacuum next to it to get the dust out, but at least I have an access port. I'm so mad at 3M - they usually make decent products…

the size. Read the fine print; it is over 4 inches. I bought them when I didn't need to change the filter right away and when I changed the filter and found it was too big it was too late to return it for my money. Now I'm stuck on these filters and ended up at $40. I think it's actually my fault for not comparing the "actual" size to the size given in the description.

I've been in the HVAC industry for 34 years, I've changed thousands of filters at work and at home so don't make the mistake of buying a filter that claims a Merv rating of 11 Install them and find that they don't work. Trust the Filtrete filter made by 3M. I bought cheaper filters, tested them after 3 months and found they looked like there was very little dirt on them and then put in the 3M filter with no change, they were made in the same environment and 3 months I checked and was amazed how

I ordered a four pack 20x25x4 without knowing the actual depth. Shows 4" deep but the brackets say they are actually 4 3/8" deep which is what I want. Reading the reviews only added to the confusion. So see my photos. I checked the depth with a tape measure, which reads 4 5/16 inches. Also a picture confirms the MERV value of 11. I don't know why they insist on sticking with 20x25x4 when they could eliminate all this unnecessary confusion by simply changing the size to 20x25x5 , as made by…