Building or upgrading a cabinet, closet, or cupboard and want a cool, space-saving door? This hidden flip-up slide rail kit is what you need. The door mounts to these top-mounted rails and, when you open it, it slides back and then flips up to tuck neatly against the ceiling or inside the cabinet frame – totally out of the way! The rails are 450mm (about 17.7 inches) long and made from sturdy cold-rolled steel. The kit comes with two slider rails, two hinges (the hinge hole is 40mm with a 5-10mm edge distance), two bearing guide wheels, and all the mounting screws. It's designed for doors that weigh less than 14kg (about 31 lbs). Perfect for tight spaces where a swinging door would get in the way, like corner cabinets, lockers, bookcases, or modern kitchen cabinets. Installation requires some basic DIY skills and measuring, but it's totally doable. Gives your project a sleek, custom look and maximizes your usable space. A clever hardware solution for any compact storage area.