donberto 5 Report post #1 Posted September 29, 2017 Local shop building box, dimensions I come up with are 33 long, 14.5 wide, 10 in depth for a total of 2.78. Going in ford f350 diesel extended cab, taking out large bench seat, any help on port/vent lengths just to compare with what they come up with. Share this post Link to post Share on other sites