Restore smooth and reliable operation to pocket doors with the Prime-Line N 6531 Twin Pocket Door Roller Assembly. Designed as a top-mount replacement roller, this assembly helps eliminate sticking, dragging, and uneven door movement caused by worn or damaged hardware. Commonly used on Acme pocket doors and similar door systems, it provides dependable support and improved door performance for residential and light commercial applications.Constructed with a stamped steel bracket and a corrosion-resistant zinc-plated finish, this roller assembly is built for long-lasting durability. The twin 7/8 in. diameter nylon wheels feature rounded edges for smooth travel along compatible tracks, helping reduce friction and wear during operation. The adjustable top-mount design utilizes a 1/2 in. gear nut that allows precise door height adjustments for improved alignment and smoother sliding performance.Designed for pocket doors ranging from 3/4 in. to 1-3/4 in. thick, this replacement assembly offers broad compatibility with many pocket door systems. Ideal for repairing worn hardware or restoring proper door alignment, the roller allows easy adjustment after installation to help keep the door level and operating correctly. Before purchasing, compare dimensions and mounting configuration with existing hardware and review the line drawing to ensure compatibility.