Down4Sound Down4Sound PRO-FAB - Birch - 2x 8-Inch Ported Subwoofer Enclosure - 07-13 GM/Chevy Crew Cab – No Lift

Description Warranty Information 2 Reviews Description Tailored for the 2007-2013 GM/Chevy Crew Cab, this Down4Sound PRO-FAB enclosure delivers powerful, precise bass with dual 8-inch subwoofer openings. Designed to fit seamlessly under the rear seat without requiring a lift kit, it ensures easy installation while maintaining your truck’s interior space. Constructed from premium birch wood and coated with a polyurethane bedliner, this enclosure combines durability with superior audio performance. Compatibility: 2007-2013 GM/Chevy Crew Cab (Under Seat, No Lift Required) Configuration: Dual 8-inch subwoofer openings, optimized for Down4Sound DBz 8" subwoofers Material: Premium birch wood with polyurethane bedliner coating for enhanced durability Outside Dimensions: Width: 54 inches Front Height: 9 1/2 inches Rear Height: 8 inches Depth: 14 inches Net Airspace (After Displacements): 0.98 cubic feet Port Information: Port Area: 11.22 square inches Port Depth: 23 1/2 inches Tuning Frequency: 33.66 Hz This expertly tuned enclosure enhances your vehicle’s audio system by delivering deep, rich bass for an immersive listening experience. Built with precision and quality, it’s the ideal upgrade for any audio enthusiast. ****ALL SALES ARE FINAL**** View All Close Warranty Information Warranty Information Your new Down4Sound product is covered by 1 limited warranty if purchased from Down4Sound or an authorized Down4Sound dealer. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Down4Sound. Your warranty covers defects in materials and/or workmanship ONLY and is not an insurance policy. The warranty only covers the original owner of the amplifier. All warranty returns must be accompanied by the original sales invoice or receipt. You must contact us to request an RMA number prior to sending any returns via the RMA request form on our websi te. You are responsible for the cost of shipping your product back to us for warranty examination. If your product is covered under warranty, shipping back to you will be at no charge to you – if your product is replaced/repaired outside of warranty you must pay for return shipping and repair bill prior returning of the product or if no defect is found you are required to pay for return shipping only. At the sole discretion of Down4Sound your product will be either repaired or replaced when it is being covered under warranty. In the event of shipping damage due to improper packaging on products being returned to Down4Sound the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return! * Extended additional warranty purchased on amplifiers take in affect from the date of purchase and must also be stated on orginal sales invoice or receipt. Refund/Return Policy: https://www.down4soundshop.com/shipping-returns/ Down4Sound - Hours of Operation Monday 6am - 9pm PDT Tuesday 6am - 9pm PDT Wednesday 6am - 9pm PDT Thursday 6am - 9pm PDT Friday 6am - 9pm PDT Saturday 8am - 4pm PDT Sunday Closed View All Close 2 Reviews 5 Boom!!! Posted by Darrius Vickers on Aug 19, 2025 I couldn’t be more impressed with my latest Down4Sound truck enclosure. The box is extremely well-built and has a clean, appealing look that instantly stands out. It’s easily one of the best prefab/ProFab enclosures I’ve ever owned, and the attention to detail really shows. The tuning is spot-on, delivering excellent performance right out of the gate. Overall, I highly recommend this enclosure to anyone looking for both quality craftsmanship and great sound. 4 Fitment Posted by Andrew on Dec 16, 2024 This box does not fit under the rear seat in a 2007 Chevy Siverado Crew Cab correctly without a seat lift, if you want it to fit under the seats properly you Will need a seat lift View All Close