This hanging file folder is designed for letter-size documents and constructed from durable poly plastic material that resists tearing and supports long-term use. Its accordion-style expanding sides and bottom provide up to one in. of additional capacity, allowing each folder to hold approximately 250 sheets without bulging or distortion. Closed side panels prevent papers from slipping out during handling or storage. The folders include labeled tabs for quick visual identification, supporting efficient categorization of documents such as medical records, administrative files, or archived correspondence. Each set contains twelve folders in six colors, with two of each color to support paired or duplicate labeling needs. They fit standard file cabinets and hang securely on standard rails. The design prioritizes structural integrity over aesthetics, with reinforced seams and consistent folding geometry. These folders are especially suited for high-volume, long-term filing environments where reliability and ease of access matter more than decorative features. Material: Metal.