Solid MDF & PVC Surface:Our bifold closet barn doors are made of MDF, Which is durable and stable,the PVC surface was waterproof and easy to clean. High Quality Hardware Quiet and Smooth Operation :Super silently nylon wheels which ensures rollers slide smoothly and quietly,high strength industrial grade flat tracks durability and weight capacity. Widely Used ：Is a perfect match with your laundry room, closet, pantry ,study, living room, kitchen and so on. Easy to Install: Package included the installation manual, step-by-step detailed instructions, you can install it easily. How to Choose the Size : 48"W (12"x4)x 84"H, thickness: 1 3/8". Track length: 52", The door opening width should be less then the track length(52") - 4", and Please make sure reserve at least 6" clearance needed from top of door and ceiling. Fredbeck advocate integrity and professionalism, we have a professional production factory, provide good product quality, according to the needs of customers to choose the most suitable products for you, and provide high-quality after-sales service, so that every customer buy the rest assured, with peace of mind.