hey all I have two 400 cfm inline fans that I want to use to vent my tent.. 1 fan to 1 hooded vent.. now with them totaling 800 cfm between the two fans can I run the lines of the two fan to a T and push 800cfm threw a 6 inch duct? so I don't have to make two holes in my house to vent? will a 6inch duct/pipe be a accommodate 800cfms?