Custom 21 × 9 cm box-seal sticker is designed for medium and large boxes that need a clear branded closure area for a logo, thank-you message, QR code, or other brand elements. Its larger format gives packaging a strong visual presence.

Specifications

• Size: 21 × 9 cm.
• Customization: Logo, text, or custom artwork.
• Use: Sealing and branding boxes and cartons.
• Colors: Full color according to the approved design.

Ideal For

• Medium and large shipping boxes.
• Online-store orders.
• Gift and giveaway boxes.
• Product bundles and promotional packs.
• Logo, thank-you message, or QR branding.

Before Ordering

• Measure the area the sticker will cover.
• Confirm that 21 × 9 cm fits the box dimensions.
• Choose the artwork direction based on the closure position.
• Test any QR code before printing.

Artwork Preparation

• Use a high-quality PDF or PNG.
• Keep a safe margin around logos and text.
• Keep important elements away from folds and edges.
• Review colors and wording before approval.

Important Notes

• Adhesion depends on box material and surface cleanliness.
• Dusty or rough surfaces may reduce adhesion.
• Printed colors may vary slightly from the screen.

For smaller boxes, see the 15×6 cm box-seal sticker.