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Ok here is the photo:

https://i.postimg.cc/76GX9Z8x/pic.jpg

The metal part slides out and then the filter goes up vertically. At the top of the filter, there are two holes. Not sure which way...

I thought that I had enough.

I need 1 more post though.

I'm going to share a photo of what I have.

Sorry - I meant the front side. I called it mesh, but I was wrong. If the dust hits the front of the filter then I'm good correct?

I looked with a flashlight and saw two medium sized holes and no fan. I was told that it pulls in outside air with a fan every 20 minutes. It is 15' in the ceiling and I can't just put my hand up...

So there is a fan on the left that pulls air through the filter. On the other side of the filter is a medium sized hole that leads up to a pipe in the roof that brings in fresh air.

So does it look like I have it on correctly?

The filter itself is fine, I'm just verifying the direction because this is different from most air filters.

Hello,

I have a large filter in the hallway and above that filter is a smaller filter (10 x 20 x 1). This smaller filter is located by sliding a piece of metal out and installing it. This filter...