Authorized Rockville Dealer! Features: 2001-2006 Chevy/GMC Heavy Duty 1500/2500/3500 Subwoofer Box 2hole 10" Chevy/GMC Heavy Duty/4 Door 1500/2500/3500 HD under seat 2001-2006 Underseat Downfire Premium Charcoal Colored Carpet 2001-2006 Chevy/GMC HD Heavy Duty 1500/2500/3500 Air Space: 0.5 Cubic Feet (per sub) Mounting Depth: 5.25" Mounting diameter (hole size): 9" (inches) Wood thickness: 5/8" (inch) Material: Highest-grade MDF wood on the market About Rockville Quality Control Procedures: The Rockville brand stands for Quality, Innovation and Value. We aim to deliver products twice as good as our competitors at a fraction of the cost of famous brands. All Rockville products go through the most rigorous quality control standards in the industry. Products go through months of extensive testing before they reach your hands. All functions and components are tested for quality. Rockville makes products that are virtually un-breakable! Rockville is one of the only brands in its class to have engineers and technicians test every concept model for weeks or months before starting production. Once production begins, Rockville sends product engineers to the factory to quality control every product. After production is complete Rockville has the head of QC in our overseas office test a certain percentage of all products from the production line a second time to ensure that the quality meets our strict standards. All Rockville products are backed with a hassle free warranty.
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