The Kenworth Sleeper Dual Sub Box, specially designed to fit under Kenworth beds. Constructed with high grade Birch instead of the standard MDF, this sub box is built to last. To prevent any moisture issues, the boxes come in Black Raptor Liner. For an additional $125, you can upgrade to a front button tuck cover. With a 9.25" cutout for the 10" sub and an 11" cutout for the 12" sub, this box has a cubic airspace of 2 Cubic Feet. Plus, enjoy FREE SHIPPING on your purchase!