Hidden Sliding Door Kit: Our concealed sliding door hardware features aluminum alloy tracks and nylon silent rollers, enabling smooth and quiet Installation Notes:1. Door panel width =Door opening width + 80mm/ 3.2inch2. Door panel height =Door opening height + 60mm /2.4inch3. Height from door to ceiling > 40mm /1.6inch4. Dooor panel thickness >38mm /1.6inch5. Single door load-bearing capacity 80kg/176 lbsVerify compatibility before purchase to ensure smooth with Soft-Close: Equipped with a buffer to minimize noise and wear while eliminating tripping or collision risks from external door closers. Applicable only to wooden door panels Installation Grooves: Top door panel requires a 1-inch L-shaped groove; bottom track requires a U-shaped groove. installation instructions and precautions in the images first. After installation, open and close the door multiple times to verify proper of the door closer Versatile Application: Overhead sliding door tracks suit living rooms, kitchens, bedrooms, bathrooms, laundry rooms, pantries, walk-in closets, studies, exam rooms, and more. Also compatible with pergola doors, barn doors, garage doors, and pocket doors, Manufacturer: WLCGYD