The Difference Between Auto-Bottom and Crash Lock Boxes Explained
Auto-bottom vs crash lock: how the mechanisms differ and which is right for your products.
How each mechanism works
Both auto-bottom and crash lock boxes feature pre-glued bases that assemble without tape. The difference lies in the folding mechanism. They are often confused because both offer "automatic" base assembly, but the engineering is distinct.
Quick answer
Crash lock boxes require a push to lock the base; auto-bottom boxes fold flat automatically when opened. In practice, the difference is subtle. Auto-bottom is marginally faster (gravity does the work), while crash lock gives a more definitive "locked" feel. Both are significantly faster than manual fold-and-tape boxes. For most applications, either works well.
Side-by-side comparison
Both take 5-10 seconds. Auto-bottom may be 1-2 seconds faster due to gravity-assisted folding.
The interlocking mechanism gives a tactile "click" that confirms the base is locked.
The gravity-fold mechanism is easier for robotic packing systems to handle.
Both provide excellent base integrity. The difference in strength is negligible for most applications.
When to use each
Crash lock boxes from ProcuraPack
Reliable crash lock boxes with a firm locking base for e-commerce and fulfilment operations.
Browse crash lock boxesFrequently asked questions
Crash lock requires a push to interlock the base; auto-bottom folds flat automatically when the walls are opened.
Both take 5-10 seconds. Auto-bottom may be marginally faster due to gravity-assisted folding.
Both provide excellent base strength. The difference is negligible for most applications.
They are often used interchangeably but technically refer to different base mechanisms.
Auto-bottom is slightly easier for robotic systems. Crash lock works better for manual packing operations.
Part of our guide
Product Guide: Crash Lock Boxes
Expert insights on crash lock packaging, from materials and design to branding and sustainability.
Browse all guides →
