LARGE-SCALE DOCUMENT STORAGE: Landscape-oriented 11x17 portfolio binder with durable yet lightweight poly construction. Made for tabloid storage and presentation ROUND 3-RINGS: The O-ring is mounted on the back panel. It holds up to 100 sheets of paper, making it perfect for portfolios and presentations. Papers lie completely flat and are easy to flip ROUNDED EDGES: Rounded corners and edges, and flexible construction add to safety, ergonomics, and durability. A lightweight, practical folder to store and transport LASTING DURABILITY: Heavy-duty poly construction for exceptional protection of valuable contents. Ideal for all standard letter-sized documents and artwork. LANDSCAPE ORIENTATION: Horizontal folder, bound on the 11-inch side. This large-format, low-profile 11x17 binder is ideal for architects, engineers, designers, and sales materials