D 2 Pack Box Fan Filters 20'' Air Filter with Retainer Clips Hand Washable USA Made (2)

Easy as pie to put on. Really helps keep the entire blade cage and motorhead dust and debri free. Great value. Looks nice, not trashy.

It significantly reduces airflow but does no filtration. I even doubled the layer up and it caught no dust or particulates after several weeks of use. This is a waste of money

filter works to keep dust and debris from blowing into room. However, pegs did not work with design of fan. Solved problem by using clothes pins, so suggest replace the pegs included in the filter package with clip ons instead. Otherwise a very effective filter for the box fan.

Catches the cat hair and dust floating around., adding life to my new fans. I have allergies and these are a big help in my home.

Tend to fall apart when washing

Good air flow through filter .I recommend using the filter on the rear of the fan (if possible) , as it makes a better seal.Fast delivery and helpful service

These turned out to be extremely cheap filters

I placed this filter on the intake side of a Merv 13 filter which I attached to my 20" Hurricane box fan. I mounted the filter & Fan filter with 3M double sided tape as the mounting tabs they give you don't work unless you want to drill holes in your fan housing? You then get a few bungee cords to mount the whole filter assembly to the fan. I placed a remote to the fan with a 7 day timer and it comes on/off everyday as programmed. Reduces the dust in the room.I suggest if not doing what I did above just get a roll of 3M double sided tape and lay the frontside of the fan down on the floor or counter then stick the tape on the perimeter of the fan case. Then carefully place the Allergen filter onto the backside of the fan and press down around the tape to hold it in place. I guess you could use velcro but I found it cheaper to just use the double sided tape. Best to Ya!