Dual 12 Ported Subwoofer Sub Box for 2004-2006 GMC/Chevy Crew Cab Non-HD
- Features: Dual 12" Ported Subwoofer Sub Box for 2004-2006 GMC/Chevy Crew Cab Non-HD.
- RockvilIe REC99. Fits Between Air Ducts Behind Seat, Remove Factory Jack, Fires Forward.
- Finished with Durable Bed Liner. 2004-2006 GMC/Chevy Crew Cab. Air Space: 0.60 Cubic Feet (per sub).
- Mounting Depth: 5.5" inches. Tuning Frequency: 34HZ.