Versatile Pocket Door Hardware – The pocket door roller assembly is compatible with a variety of bypass, bi-fold, and pocket closet doors, offering smooth and quiet operation for your sliding door needs Smooth Movement – This roller assembly features a top-hung, center-mounted tricycle design with 3/4 inch flat rollers, ensuring seamless and long-lasting door movement Durable – Built with a steel bracket and durable plastic rollers, this pocket door assembly provides reliable strength and quiet functionality for heavy-duty applications Installation – The threaded rod easily installs into the bracket at the top of the door, making this closet door assembly quick and simple to set up with basic tools Applicable: Suitable for doors and tracks with a height of 1-3/8 inches (approximately 35 millimeters) and an inner width of 1-1/8 inches (approximately 28 millimeters).