help trying to fic carbo filter

Ok so I have a 2 x 2 x 5 grow tent that I need to fit a 18 in filter and a 8 in fan any ideas of doing this

do you need to place it in the tent? i have 10 x 10 room that i flower a 5x5 tent in and i put the carbon filter in the center of the room and you cant smell it at all. If that tent is all the space you can take up you could place a 2x4 across the top of the tent on the inside and hang the filter in there horizontally. i would hate to use any of that small floor space for anything other than plants. happy gro