Based on this product's specifications, here are some alternatives and similar models
Document Shelf Staples C72034, desktop document organizer, black
Summary description:
Staples C72034 is a black desktop document shelf designed to organize papers, folders and office documents. Compact and practical, it provides a stable horizontal surface for stacking documents and keeping a tidy workspace. Suitable for use in offices, home workspaces and reception areas where accessible document storage is needed.