The MaxMERV9 is our newest filter design, using the latest polypropylene weave technology to achieve a MERV 9 rating. That is the highest MERV rating given to any permanent, washable filter on the market today. We did not cut corners in developing the MaxMERV9. It features a super strong and lightweight aluminum frame and corrugated grid with double rivets and extra drain holes. This filter has a slightly higher air resistance rating but still provides better airflow than most quality pleated disposable filters. Like all of our filters, it develops a natural electrostatic charge as air passes through the media layers. This static charge captures and holds onto dust particles until the filter is cleaned. Designed for residential use, the frame is durable enough to be used in commercial or industrial applications. If you are looking for a permanent, washable filter that will capture the most dust and trap the smallest particles, the MaxMERV9 is your choice.
This filter is 7/8 inch thick
PEAK ARRESTANCE: 83.2%
INITIAL RESISTANCE: 0.252" WG
DUST HOLDING: 68 grams
AIRFLOW RATE: 295 FPM
END POINT OF TEST: 1.00" WG
MERV RATING: 9
I ordered custom size filters. They arrived quickly and are high quality. No problems.
The filter fits well and the filter media appears to be substantial. However frame was damaged during shipping. Still able to install but definite ding on the side.
I didn't use it for this year yet, but last year it was great and very easy to install and wash. I recommended it to anyone. The price with the 10% off was great also. Makes no noise.
It's the least expensive and best filter lasts forever
MaxMERV9 - The High Arrestance Washable, Permanent, Electrostatic A/C Furnace Filter