sits

Hi Guys, Is there a filter supposed to sit in the filter box thats in the corner of the bonnet behind the engine partition on the passenger side? There is no filter on mine but looking in to the body it looks like there might be a filter that sits there. There is a fan in there. I had the car...

Like the title says :( I noticed that the car slopes to the right while it was on the ramps last week... no leaks that i can see what do I need to fix this time???