Dual 12 Subwoofer Sub Box Enclosure For 0713 GMCChevy Xcab HighTrans

Features 20072013 GMCChevy Xcab HighTrans Downfire Dual12 Subwoofer Sub Box Enclosure 2hole 12 for GMCChevy 20072013 Xcab High Transmission Underseat Downfire, This Vehicle has a large hump under the seat. Premium Charcoal Colored Carpet 20072013 GMCChevy 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 58 inch