NORTHWEST ENTERPRISES Vent Filter, Air Vent Filters, MERV 8 Electrostatic Triple Filtration Floor Vent filters -, 4"x12", 90 day filtration. (12)

These all really nice I sure have less dust in the house.

Just slightly oversize so I trimmed just a touch off two sides and it fits in snug, won’t fall out, good thickness, sticky on one side, and dark blue faces upward so you can’t see the filter once register is placed back in.

I noticed within the first couple days after placing these in my bedroom vent that I don't wake up with a stuffy nose. Happy with this purchase!

Obviously I bought the wrong size for this particular intake vent, but they fit standard HVAC vents. They are supposed to go under the vent plate, but apartments are easier to put on the outside—unless the look bothers you. Simple Velcro on the vent and they cling. My apartment has HORRIBLE “filters” which filter absolutely nothing. I do have 3 air purifiers in the home. Shown is about 2 months of use in an active hallway.

I definitely liked the price, but I checked before ordering bc I didn’t want filters that were too flimsy. I need good ones, but pliable enough to be put into my floor filters and of a good quality to provide the right kind of dust filtration. Please read the instructions and I think you will be pleased with this product! I was very happy to find these!