I was wondering how people using formica for their tops (a la the Haas man design) are mounting their air filters to the formica.

Her is a pic of what I did. It's made from 1/2" or 3/4" channel from Lowes. I hot glued the foam in the channel base. You insert it by putting the two tabs in one side, then sliding the opposite end in at an angle. The foam I was using allowed the two to move. Kinda hard to explain, but you can figure it out.