SR4725a Port diameter and Duct length?

[SMKSoundPro]

Can anyone help a guy out?

I am building a pair of 4725 clones and am asking if anyone has a pair to measure. I have the box cut and am now working on the baffle board.

Any help is appreciated as always!

Thank you in advance.

Scotty.

[badman]

3 3/8 total depth including the baffle through-hole, and 3" diameter. 2 ports.