Custom Auto Lock Bottom Boxes

What is an auto lock bottom box?

An auto lock bottom box is a folding carton whose bottom panels are glued during production so that they lock together automatically when the flat box is squeezed open. The top usually closes with a tuck flap. Because the base forms in one motion and holds firm, these boxes are fast to pack and carry more weight than a standard tuck end carton.

When to choose an auto lock bottom box

• Your product is heavier than a typical cosmetic or accessory, such as a glass jar, bottle or candle.
• You pack many boxes by hand and want to save time on assembly.
• You want a retail carton that will not open at the bottom when lifted.
• You need a clean front panel for shelf display.

For light items that do not need extra support, a tuck end box is simpler and usually lower in cost.

Materials and finishes

Most auto lock bottom boxes are made from SBS paperboard for bright print or kraft paperboard for a natural, unbleached look. For heavier contents, a thicker board or E-flute corrugated adds rigidity. Finishes include:

• Matte, gloss or soft-touch lamination
• Spot UV, foil stamping, embossing and debossing
• Window cutouts with clear film
• Inserts or dividers to separate bottles and jars

Design tips

• The base panels overlap, so keep important text off the bottom or limit it to a single panel.
• Place barcodes on a side panel where scanners can reach them easily.
• Use the top tuck flap inside for a thank-you line or usage tip.
• Tell us the product weight so the board choice matches the load.

How ordering works

Send us your product dimensions and weight, quantity, board and finishes, and we reply with pricing. Our team places your artwork on the dieline and sends a digital proof before print. When you approve it, our production partner makes the boxes to your exact size and ships them to you anywhere in the USA or Canada.