you can build a box around the carbon filter and route the ac into it and it will actually improve the function of the ac becaus the filter will suck the hot air out as opposed to the ac needing to push it out. It also helps because the hot air gets wisked away so it doesnt effect the function of the ac
plus these portable units dont exhaust much stinky air from the room anyhow . thats what i was told , but have no way to confim that with my unit yet
my blue dream is 8" tall in veg and pecevably smells when entering the 9'x7.5' room