As i replaced my pollen filter
a foam piece from the side came of:





I did not notice it's position before,
so now having doubts of proper placement.

The bottom is triangular like and i don't see any
similar wedged place where to put it.

What is the proper position A or B:





To me it seems more logical position A,
bu in order to sit firmly i think i need to glue it.

Instructions or even better pictures of it properly attached
greatly appreciated!

TNX


Best

Igor