Check the listing for details. Folding Door Top Guide Roller N344911 National Hardware. Color: White, Condition: New. Listed at 7.99 USD. This high-quality Folding Door Top Guide Roller N344911 from National Hardware is the perfect addition to your home improvement project. With a modern style and a combination of plastic and steel materials, this guide roller is durable and built to last. It is designed for use with folding doors, whether they are single or double doors, and features a top guide roller for smooth and easy folding. The guide roller comes with all the necessary hardware to make installation a breeze. The white color complements any room's decor, and the roller is suitable for use in any type of room. The National Hardware N344911 Folding Door Top Guide Roller is a must-have for anyone looking to improve their home's functionality and aesthetics. Box x