Carbon Steel Construction: Made from carbon steel with a frosted black surface, this hardware kit is rust-resistant, ensuring long-lasting beauty and performance for years Fits Doors Up to 14.5 Inches: The 5ft/60" kit is designed to fit door panels with a maximum width of 14.5 inches, providing flexibility for various door sizes Smooth and Quiet Operation: Featuring premium nylon roller wheels and Gcr15 roller bearings, the roller part ensures smooth, quiet, and effortless door sliding, enhancing user experience Heavy-Duty Weight Capacity: With a weight capacity of up to 330 lbs and compatibility with door thicknesses between 1.18" and 1.96", this kit is for sturdy, heavy doors Easy DIY Installation: for woodworking projects, the kit is designed for easy installation, allowing for a DIY approach to creating a stylish and functional bifold barn door system, Manufacturer: SEVEQIS