Thunder Mounts has been created and developed to offer customers, dealers, and industry leaders around the world a choice. This choice is the right decision for many reasons. First, Thunder Mounts are the only modern highly engineered overhead garage mount system in the world designed to properly install overhead garage doors and openers. Second, made for today's modern garage doors to complete a finished look adding aesthetic value that has never been accomplished before. And most of all providing this high-quality product for our Industry and installers to do a better job. That's what was missing in today's garage door industry. This decision to remove the 100-year-old industry-standard sharp-edged punched-out material is one of the best upgrades for your home. No one wants to get punched out, no one. Customers and dealers across America and Canada searched to find this high-quality product to accomplish a cleaner installation. Thunder Mounts are that, the first of its kind overhead garage mount solution. Accomplishing a highly desirable clean symmetrical result every time everywhere. Over-engineered to support any overhead garage door and opener. Simple to assemble and able to hide the wires out of sight for a superior look. Also made to fit, no cutting and smooth-edged parts for safer installations. Powder-coated parts, finish ring, hardware, and instructions are all included. Order today the next best safety upgrade that adds value clean looks safety inside the garage of your home. Our Installation length chart at the bottom of this page will help you decide the kit that best fits your needs. Just measure from the top of your support joist to the bottom of the door track or opener attach point.