Experience smooth and quiet door operation with the National Hardware N344-911 V391GR Folding Door Top Guide Roller. Zinc-plated guide rails are rust-proof and durable, ensuring long-lasting performance. Easy to install and perfect for tight doors that other guide rolls might not fit. The guide roller stays in the track and adjusts to door frames that are not square. The compact design fits seamlessly into pocket or bifold doors.
  Designed with precision for the perfect fit, the North American-manufactured N344-911 Folding Door GuideRoller comes with aLifetime Warranty. Its durable fence-style design is smooth, quiet, andLow-Maintenance. The SmoothStudy(P ) nyloom balls minimize edge noise and keep your door perfectly aligned. This essential guide roller for folding doors is made to lift, lower, and travel with comfort.