I'm pretty sure the space above the light recommendation is for heat dissipation. Should be able to half that distance with the exhaust right above the driver and a fan. I'm height restricted too in a 6'6" tent with a 16" table inside of itThanks buddy. I’m going to have to be good about controlling stretch…..recommended height in flower is three feet…..in a seven foot tent….and I have to keep 15” space above the light