j3bus2k3 5,000+ posts
Si vis pacem, para bellum
What the red measurments are showing are port length. From the opening to the middle of the bend and from the middle of the bend to the end of the port. 1 Question I DO have is does your port wall 18.5" long of 19.25" long? If its 19.25", does it start from the front and go back or does it start from the inside of the front and extend back?