Dual vertical shelf system with adjustable spacing provides flexible, tidy storage for your desk setup. The two shelves are spaced 12.2 in apart, with the lower storage area 20.86 in high to accommodate a 28 in computer monitor. Partitions include back and side walls to prevent items from falling. Moves with your desk for consistent access whether you are seated or standing. Designed for height adjustable sit-stand desks, it adds storage to reduce desk clutter and keep essentials within reach. Material and construction: The column is a steel tube 2.36 x 1.18 in with a high temperature coating and two layers of high density adjustable laminate. This design is corrosion resistant, durable and strong. Sizes available: 24.8 x 7.87 x 37.4 in; 32.67 x 7.87 x 37.4 in; 40.55 x 7.87 x 37.4 in. Industrial black desk shelf: Combines the modern industrial pipe style of wall mounted systems with large floor units to create a compact desk organizer. Ideal for storing plants, pictures, books, decor, mugs and more. Each shelf supports up to 15 kg. Use scenarios: - Home office with a sit-stand desk: keep the desktop clear while using the lower area for a monitor up to 28 in, plus upper storage for documents and accessories. - Small space such as a dorm or studio: maximize vertical storage for books, decor, and supplies while keeping the surface clutter free. - Living room or study: display plants, photos and decorative items on the shelves while maintaining a tidy workspace.