Help With Level 3 12's Enclosure

[Guv]

I just ordered a pair of Level 3 12s and as I was trying to download Torres to design my box I find that it is more difficult than I thought. Its a new computer so some issues with windows being unable to open it blah blah. Anyway I was wondering if anyone here would be kind enough to design something for me as I cannot find any other way to do this. The max dimensions for the box can be 30x35x16. (LWH in inches) Any help would be appreciated. Thanks

Edit: Guess I should include that Ill be sealing the box off from the trunk so port and subs facing the same direction and Id like the port in the middle. And as far as tuning goes Im up to suggestions but about 34 hz is what Id like

[donpablo]

I had 2 lvl 3 12s this is what box worked for me best with size and tuning

[Joe X]

Here is a another suggestion (subs on rated power):

Enclosure Specifications:

Fb = 34 Hz

Vb = 3.5 ft^3

External Height = 16 in

External Width = 36 in

External Depth = 19.25 in

Port Width = 3 3/4 in

Cut Sheet List:

* All Dimensions in Inches.

* Wood Thickness is 3/4 for all Parts.

External Enclosure Parts:

2x Front = 15 3/4 x 14 1/2

2x Front Internal = 14 1/4 x 14 1/2

Back = 36 x 14 1/2

Left & Right Sides: 17 3/4 x 14 1/2

Top & Bottom = 36 x 19 1/4

Shared Port Internal Assembly Parts:

2 x Front to Back = 15 7/8 x 14 1/2

2 x Extension = 8 1/16 x 14 1/2

Assembly guide (generic dimensions):

Let me know any questions.

[Guv]

Thanks very much to both of you. @Donpablo Im not sure if its my computer but I was unable to see one of your images