Prime-Line Screen Door with Polyethylene Roller, 2-Pack is a set of durable rollers designed specifically for screen doors, featuring a reliable V-spring design favored by Academy and other patio door manufacturers. Each roller includes a 1-inch diameter polyethylene wheel paired with a 1-3/4-inch long tension spring made from heat-treated steel, ensuring long-lasting performance. The innovative bent or angled flat spring design allows for easy height adjustment via an adjusting screw, helping you fine-tune the roller height for smooth and efficient door operation. These rollers are i for replacing worn or damaged parts, restoring the effortless sliding functionality of your screen door. This 2-pack provides balanced support by supplying rollers for both sides of the door, making it a practical and effective solution for maintenance or repair needs. Model Number: B 638