GUANDU PACKAGING · BUYER'S GUIDE

Start your mailer order with the right size.

Use the packed dimensions of your product for a practical quotation starting point. Our team will confirm the final material, flap and tolerance with you.

MAILER SIZE CALCULATOR

Enter packed product dimensions

Product width (mm)Product length (mm)Packed thickness (mm)Protection needed

Measure after packing

Use the size after folding, boxing or wrapping the actual item—not its flat product dimensions.

Choose protection

Use courier bags for everyday, non-fragile goods. Choose bubble mailers for added cushioning.

Confirm your order

Tell us the size, material, print artwork, quantity and destination for a production-ready quotation.

FACTORY-DIRECT CUSTOMIZATION

Need a custom mailer, material or print?

Our product team can recommend a construction for your shipment and provide a sample plan.

Talk to Guandu Packaging ↗