Features:

• 2007-2013 GMC/Chevy Xcab High-Trans Downfire Dual12" Subwoofer Sub Box Enclosure 
• 2hole 12" for GMC/Chevy 2007-2013 Xcab High Transmission
  
• Underseat Downfire, This Vehicle has a large hump under the seat
  
• Premium Charcoal Colored Carpet
  
• 2007-2013 GMC/Chevy Xcab, Does NOT fit Crew Cab
  
• Air Space: 0.88 Cubic Feet (per sub)
  
• Mounting Depth: 5.5"
• Mounting diameter (hole size): 11" (inches)
• Wood thickness: 5/8" (inch)
• Material: Highest-grade MDF wood on the market