THANK YOU FOR YOUR PATIENCE. CUTOUT DIAMETER: 11 1/8. TOTAL AIR VOLUME: 1.48 CUBIC FT. 1 SLOT PORT (DIMENSIONS: H-1 7/8 W-4 7/8 L-10). MOUNTING DEPTH: 6 1/4. TOP DEPTH: 16 3/4. BOTTOM DEPTH: 17 1/4. 5/8 HIGH DENSITY MDF WOOD. MAINLY SEALED WITH HIGH QUALITY SILICONE. FITS UNDER REAR SEAT. NOT ALL 12 SUB’S WILL FIT DUE TO THE CUTOUT DIAMETER OR MOUNTING DEPTH SO PLEASE CHECK THE DIMENSIONS TO MAKE SURE THIS BOX SUITS YOUR SUB’S. The item “Gmc Sierra Crew-Cab 2007-2013 12 Dual Ported vented Sub box Subwoofer Enclosure” is in sale since Wednesday, August 26, 2020. This item is in the category “Consumer Electronics\Vehicle Electronics & GPS\Car Audio & Video Installation\Speaker/Sub. Enclosures”. The seller is “online-ground-shaker” and is located in Los Angeles, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam.

• MPN: Does Not Apply
• Country/Region of Manufacture: United States
• Fitment: Under Seat
• Speaker Size: 12″
• Brand: Ground-shaker