{"product_id":"down4sound-pro-fab-birch-4x-8-inch-ported-subwoofer-enclosure-99-07-gm-chevy-extended-cab-2-5-inch-seat-lift-required","title":"Down4Sound PRO-FAB - Birch - 4X 8-INCH Ported Subwoofer Enclosure - 99-07 GM\/CHEVY Extended CAB - 2.5-INCH Seat Lift Required","description":"\u003cp\u003eTailored for the 1999-2007 GM\/Chevy Extended Cab, this Down4Sound PRO-FAB enclosure is designed for serious bass enthusiasts. Featuring four 8-inch subwoofer openings, it delivers precision-tuned bass output with a tuning frequency of 32.5 Hz. Crafted from premium birch wood and finished with a durable polyurethane bedliner, this enclosure is built to withstand high-performance demands. \u003cstrong\u003eA 2.5-inch seat lift is required\u003c\/strong\u003e for proper installation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e1999-2007 GM\/Chevy Extended Cab (Under Seat, 2.5-Inch seat lift is required \u003cstrong\u003eBUT IS NOT INCLUDED\u003c\/strong\u003e)\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eConfiguration\u003c\/h2\u003eQuad 8-inch subwoofer openings\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eMaterial\u003c\/h2\u003ePremium birch wood with polyurethane bedliner coating for enhanced durability\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eOutside Dimensions\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003eWidth\u003c\/h2\u003e55 inches\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eFront Height\u003c\/h2\u003e9 1\/2 inches\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eRear Height\u003c\/h2\u003e12 1\/2 inches\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eDepth\u003c\/h2\u003e14 3\/4 inches\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eNet Airspace (After Displacements)\u003c\/h2\u003e1.29 cubic feet per side \u003ch2\u003ePort Information\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003ch2\u003ePort Area\u003c\/h2\u003e10.98 square inches each\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003ePort Depth\u003c\/h2\u003e12 1\/2 inches\u003c\/li\u003e \u003cli\u003e\n\u003ch2\u003eTuning Frequency\u003c\/h2\u003e32.5 Hz\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eRecommended Subwoofer\u003c\/h2\u003eOptimized for Down4Sound DBz 8\" Subwoofers \u003cp\u003eThis enclosure is the perfect fit for upgrading your GM\/Chevy Extended Cab’s audio system, providing exceptional durability and bass performance for high-output setups.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e****ALL SALES ARE FINAL****\u003c\/p\u003e      \n\u003cp\u003e\u003cstrong\u003eAuthorized Down4Sound dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Down4Sound","offers":[{"title":"Default Title","offer_id":66828391088173,"sku":"TD4S-PFB-GM9907-488SL","price":469.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/down4sound-pro-fab-birch-4x-8-inch-ported-subwoofer-enclosure-99-07-gm-chevy-extended-cab-2-5-inch-seat-lift-required-w_f1571649-d00e-4df8-ae37-670936565b99.jpg?v=1782676713","url":"https:\/\/www.jsultimatesounds.com\/products\/down4sound-pro-fab-birch-4x-8-inch-ported-subwoofer-enclosure-99-07-gm-chevy-extended-cab-2-5-inch-seat-lift-required","provider":"JS Ultimate Sounds","version":"1.0","type":"link"}