What Is an Auto Lock Box
An auto lock (crash-lock) bottom folds and locks as the carton is squared up, creating a one-piece retail carton that holds more weight than a simple tuck bottom without requiring the packer to tape or glue the base.
Auto Bottom vs. Standard Tuck End
Choose auto lock bottoms when product weight, glass jars, or dense contents need a stronger base. Keep reverse or straight tuck ends for lighter SKUs where cost efficiency matters most.
- Auto lock / crash-lock for heavier contents
- Standard tuck end for lightweight retail cartons
- Mixed structures across a product line when SKUs vary in weight
Printing & Finishing
Full CMYK or spot color, kraft or white board, matte or gloss lamination, spot UV, and foil options — the same finish toolkit as our other folding cartons.
Best Applications
Auto lock boxes work well for jars, bottles, candles in cartons, dense supplements, and any retail SKU that has stressed a standard tuck bottom in shipping tests.
- Jar and bottle retail cartons
- Heavier cosmetics and wellness kits
- Food cartons needing a locked base
- Candle and gift cartons with weight
Ordering Auto Lock Boxes
Share product weight, dimensions, and whether you need reverse tuck tops with an auto-lock bottom. We confirm structure, prototype fit, and return pricing within 24 hours — MOQs from 50 units.
