Locking storage clipboards generally use either a snap-closure latch or a keyed lock. Some product listings specify a snap closure that secures the contents, while others use a key-operated lock (with keys included).
Internal storage depth varies by model—examples include about 0.75 inches up to 1 inch of internal capacity. Some listings also state sheet capacity (for example, up to 100 sheets) rather than depth, so check the product details to see whether a specification refers to inches of internal space or a sheet count.
Materials vary by model but commonly include plastics such as polypropylene, metal components for clips, and on some models recycled aluminum and artificial leather with reinforced metal trim.
These storage clipboards are designed to hold standard letter-size paper (8.5 x 11 inches).
Clips are typically low-profile spring or metal designs; some models include reversible internal clips or rubberized corners. Clip designs in listings are often rated to secure up to about a 0.5-inch stack of paper.
The clip itself is typically rated to hold up to about a 0.5-inch stack of paper while writing.