Review on Atrend Bbox A151-12CP Single 12" Sealed Carpeted Subwoofer Enclosure - Compatible with 1999-2007 Chevrolet/GMC Silverado/Sierra Extended Cab, in Charcoal Finish by Kevin Mariappan

The only problem was the cheap air connection. I recommend getting a better connector for a snug fit and not having to worry about escaping air every time it hits. Plus it's great and the 12" Rockford P3 I put on it fits perfectly, I just had to remove the rubber protector from the magnet and it slid right in. (I'm not a pro so I don't know if it's a bad thing to take it off or if the p3 is too big although the recommended CUs were close but it works fine for me when I connect it to a 500w RMS monoblock connect from RF)