On Aug 4, 1:50*am, Sam Takoy wrote:
I want to put a HEPA filter in my A/C Air Return Grille. I check local
big box stores and didn't find anything. Strike-out at local A/C
suppliers such as Michael.

I did a google search "HEPA Air Return Filters" and got essentially
nothing. Some sponsored links were promising, but I wasn't able find
anything there either.

Did you come up with this idea yourself, or did you read/hear about it
somewhere?