The 12-inch Q Power Subwoofer Box is designed and built for the deepest bass. Comes with 5/8" heavy duty MDF construction and 2 sealed chambers. The Q Power Subwoofer Box has a charcoal carpet covering! This quality enclosure sub box will ensure that your 12" woofers hit really hard time and time again. Q Power is known in the industry for creating high quality car audio products and affordable prices.