Quick custom box cool tool

Check out Klaus Audio for a quick look at box configurator and preview as long as u know what some of ur specs are. They even give you free step by step on the cuts.

http://www.klausaudio.com/shop/custom-enclosures/dual-10-subwoofer-boxes.php

Scroll down and choose ur box type and click customize. Enter ur values and then see what it will look like along with the dimensions.