Heavy-Duty Strength You Can Stack On: Built with a 800lb stacking strength, these corrugate file boxes with locking lids are the go-to solution for secure, stackable document storage - ideal for long-term archiving in busy offices. Presto Assembly Saves Time: These file storage boxes with lids pop open in a one step set-up - no tape, no hassle. Perfect for professionals who value quick setup during audits, moves, or quarterly cleanups. Secure Lid Keeps Contents Protected: Each box features a snug-fitting lift-off lid that locks in place, keeping your files dust-free and organized. A must-have document organizer for professionals who value security and order. Easy to Carry with Built-In Reinforced Handles: Move your storage file boxes confidently with tear-resistant hand holes - designed for easy lifting and carrying between offices, rooms, or locations. Accommodates Legal-Size Documents: These file boxes with lids also support legal-size folders, giving professionals a reliable solution for storing contracts, case files, and longer-format paperwork. Collapsible & Reusable Design: When not in use, these file storage boxes fold flat for compact storage. Reuse them again and again - ideal for seasonal records, rotating client files, temporary storage needs, or seasonal storage. Made in the USA & Professional Grade: Eco-friendly with 60% recycled content, these cardboard file boxes with lids combine sustainability with trusted durability - reinforcing your brand’s commitment to quality and the environment.