Enclosure design help

[Joe X]

Ok, here is a second drawing same specs, desired external dims, power: to sub rated, amp subsonic filter to 28Hz, minimum port clearance 2 3/4", figure is just an assembly guide:

NOTE: If building outside you need to build a cardboard dummy box to test fit in it's way inside.

[bcbrassard]

Thank you sir, exactly what i was looking for. As always... you are the man.