Work great and helps contain any dust! Is washable so continuous use is a money saver! Fits perfectly in the Return Air Vent box

So easy to wash! Bought 2 more for family members.

Clean air! Easy to maintain! Works great!

I paid $30 for this. I was spending that much every couple months. Happy to save money!

it is great easy to wash and clean only to use again and again...

very well made washable filter that fit perfect.

This filter wirks until you wash it. i will be going back to the 3M fikters! this is so horrible.. DO NOT BUY THIS!!

Easy to use.

Replacing a similar washable filter more than 10 years old. Seems better built with the small plastic ties to prevent fabric from slipping out. I had to swap 2 screws in my filter housing so that it would fit properly. I'm a believer in this type as most paper based one-way are too flimsy today to say nothing of the cost. Also with a 20x30, most one-ways tend to bow inward as they often have no real support in the middle.

This filter looks like a good filter, however I have to return it. The description was great but it did not say whether the dimensions were exact or if they used the common size in the description. Be careful because this filter is an exact measurement. In other words, it runs large. It doesn't fit in a funace door return air track.