Thin is in! AutoLoc's™ SlimLine Ultra-Thin Vertical Door System is a revolution in Lambo/Upright Door engineering. Featuring AutoLoc's™ famous heavy-duty anti-wobble construction and smooth swing movement, the SlimLine is only 2" thick with a swing arm that is only 1/2" thick! Its reduced size makes it a perfect fit for imports, roadsters, and other vehicles that have limited fender room and clearance. The UDST kit comes with all necessary hardware, detailed instructions, full tech support, and a Limited Lifetime Warranty.