Enjoy, all my boxes built so far in one post.
The box holding my 10" Type R in my 2004 Silverado. Fiberglass molded to floor, 3 sides and top are MDF. Color matched to the truck and clear coated.
What it looked like a few days before the photo. Changed the port from a 3" (Alpines recommendation) to a 4".
First home theater box. 2.5 cubes, 4" port, TC9 12" with a grey/black hammered finish.
Second home theater box and the one Im still using. 7 cubes with a 10" port, 2 15"RF T1's, black primer and a little custom paint on the back finished with an automotive clearcoat.