huh....didn't think of using those. Looks like a good solution though. The 3M filter I was actually referring to is the one that you put on top of your standard air filter in your home. It is blue on one side and white on the other. Works great for filtering dust and VERY cheap. I think one package can be used about...50 times.

My KAE lasted 10 years and was still going. Be sure to clean the mounting surface very well and follow the torque instructions. You want a very good contact to dissipate the heat.