20x20x1 air filter washable?

Get it July 1-7.Quality materials, well constructed, I use it as a return air pre-filter, then use a pleated disposable, this doubles the lifespan of 20x26 x4 filters that cost between 30 and 40 dollars each. Now, when the sun shines through the windows, you don't see dust floating around. Discount Filters offers many different types of discounted air filters to help you better breathe the air inside your home based on your specific needs. A dirty filter restricts airflow in the air handler of your HVAC system, making it work harder to cool or heat your home.