Product Details: Custom Designed Unloaded 10" Single Sealed Subwoofer Enclosure. Compatible with 2014-2019 Toyota Highlander, Highlander Hybrid. Installs in the driver's side of the trunk and sacrifices very little space. Enclosure constructed of hand-laid fiberglass. Carpeted finish to match the interior. Includes mounting hardware and installation instructions. Subwoofer maximum mounting depth: 5. 5" (139. 7 mm). Subwoofer cutout diameter: 9. 15" (236 mm). Subwoofer overall diameter: 10. 4" (263 mm). Internal box volume: 0. 54 cubic feet. ⚠️ If your subwoofer exceeds these dimensions it will not fit properly. Returns due to improper fitment will not be accepted. Authorized Internet Dealer. 1-year Manufacturer's Warranty.