Adding bass to a truck can be a very complicated problem to tackle, especially when building a box! We offer pre-built enclosures that are ready to be dropped into your 88-98 Chevy Silverado / GMC Sierra truck that offer unbeatable performance and sound quality that simply cannot be matched. This is a dual 10" down firing model, why down firing? This style enclosure actually increase the SPL output of your subwoofers forcing the sound waves to travel up in down inside the cab before reaching the listener. The woofers are spaced off the floor so it's not possible for them to hit the floor while playing. It also keeps the subs out of view for security concerns. Overall you cannot find a better fitting or sound box at this price! Our boxes are made from precision cuts of MDF. They are then liquid nailed, nailed and completely sealed. We then wrap them with high quality carpet that matches most vehicle interiors. All Boxes feature high grade spring loaded terminal cup(s) for the absolute best connection possible. All the custom series enclosures are made to fit precisely into your Chevy CK 88-98 Extended Cab to the get the max performance from every extra inch of wasted space. We guarantee you will not only see a difference in the quality of the boxes we build, but you will hear the difference and that is what is it is truly all about. DURABLE CONSTRUCTION: The ASC 2X10GMOLD Custom Chevrolet Ck Ext Cab 88-98 Truck Dual 10 Enclosure Sub Box is meticulously crafted with precision and durability in mind. Its high-grade construction materials ensure longevity and robustness, capable of withstanding the demands of your car audio system. IMPROVE SOUND QUALITY: This enclosure is designed to enhance your sound quality significantly. Its dual 10" subwoofer configuration delivers powerful and deep bass that complements the rest of your audio system, providing an immersive listening experience with clear and impactful low frequencies. CUSTOM FIT: The 2X10GMOLD enclosure is meticulously designed to fit seamlessly into the rear seat area of 1988-1998 Chevrolet C/K Extended Cab trucks. With dimensions tailored, this enclosure is custom-fit to seamlessly integrate into your vehicle's available space. It ensures an optimal fit, maximizing your vehicle's audio potential. DIMENSIONS: Width 56-3/4" x Front Height 10" x Rear Height 6-1/4" x Depth 13-1/4" ADDITIONAL ITEM SPECS: Mounting Depth of 6" making it compatible with the majority of 10-inch subwoofers and a total Air Space of 0.95 Cubic Feet for increased output