Fi BL 18" Port

[kschutz 0]

I have a 2003 Chevrolet Tahoe and I am going to put a Fi BL 18" in it.

It will be powered with a Rockford Fosgate T10001bd amp and a Kinetik battery.

Just ordered it yesterday

I have a general idea of the specs on my box in order to fit the 5-10 cubic feet.

It will be about 9 cubes by the time everything is displaced.

The only problem since I am new to car audio and this is my first system is what are the dimensions of the port?

The box will be W 45" x H 20" x D 20" with 3/4" MDF.

I want to tune the box to 32Hz.

Any help will be appreciated.

-Kasey