Wayne Parham Messages: 18783 Registered: January 2001
Illuminati (33rd Degree)
Port length is 10", entry to exit. That dimension is shown on the baffle cutout drawing. Use the same material that you made the cabinet from. Thickness isn't really important, just make sure the inside dimensions are 3-1/2" x 6" and the total length from the front baffle edge where the port exits to the end inside the box is 10" long.