Alpine KTX-H12 Linking Kit Heavy-duty steel front and rear linking brackets for connecting two Alpine Halo

Alpine KTX-H12 Linking Kit Heavy-duty steel front and rear linking brackets for connecting two Alpine Halo Linking Kit for Dual 12" Alpine Halo Preloaded Subwoofer Enclosures with ProLink, Heavy-duty steel front and rear linking brackets for connecting two Alpine Halo 12" subwoofer enclosures Add more bass to your sound system with the Linking Kit for Dual 12" Alpine Halo Preloaded Subwoofer Enclosures, featuring Alpine's new ProLink™ technology. General Features: Aluminum rear link plate 12-inch Front ABS / Steel reinforced port link Center link stabilizing dowels Alpine logo plate All hardware included Authorized Internet Dealer What is in the box: Front port-link Two 9" front port braces 23.25" Rear link-plate Four 25mm hex-socket screws Eight 14mm hex-socket screws Four 20mm threaded alignment posts 3mm Allen-key Installation instructions Safety warnings Alpine KTX-H12 Linking Kit owner's manual ⚠️Warning: Cancer and Reproductive Harm-www.P65Warnings.ca.gov