its the same as slot port, just the surface area would be 5x5x3.1416 for 10" so around 78.5sq.inch for 1 10inch round port and use winisd to calculate how long...as in how long? ive never dealt with these types of ports so idk how to calculate it
My home depot dos //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gifdoes home depot carry that big?