Amazon.com: Compatible with Chevy Avalanche or Cadillac Escalade EXT 2002-2013 Dual 12" Subwoofer Behind Seat Sub Box Speaker Enclosure : Electronics
Chevy Avalanche 2001-2013 1.6cuft Ported Sub Box
2002-2006 Chevrolet Avalanche Dual Subwoofer Enclosure - SSA STORE
Pin on Avalanche Stereo System
2001-2013 CHEVROLET AVALANCHE SINGLE SUBWOOFER ENCLOSURE - SSA STORE
Amazon.com: Compatible with 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Chevy Avalanche Underseat Alpine S-W12D2 Type S Car Audio Subwoofers Custom Dual 12" Sub Box Enclosure Package New : Electronics
Amazon.com: ASC AV/ESC2X12B-SEAT Compatible with Chevy Avalanche 2002-Up Dual 12" Sub Enclosure Box and Kicker 43CVT124 CompVT CVT12 Series Sub 400W RMS 4 Ohm SVC Car Subwoofer : Electronics
2002-2013 Chevy Avalanche Custom Fit Dual 12" Stereo Subwoofer Enclosure Sub Box - Walmart.com