Rockford Fosgate 10in. Dvc subwoofer. Comes in a Kicker Competition single ported truck box. Box measurements are 21&3/4in. Long,15in.height,bottom depth is 7&1/2in.,top depth is 4in. Ported boxes give really good deep bass. I"m putting a complete new system in my show truck and this came out of it. Sub is still good &tight no problems with it at all.