Mailer Boxes 155×100×20mm – Self Locking Mailing Box Fits in Aus Post Small Satchels

Mailer Boxes 155 × 100 × 20mm Lightweight

Self Locking Mailing Boxes | Eco-Friendly | 100 Pack

Ship small products securely and professionally with our 155 × 100 × 20mm Die-Cut Mailer Boxes. Designed with a compact, slim profile and convenient self-locking closure, these lightweight corrugated mailers provide excellent protection without adding unnecessary packaging weight.

With an external size of 160 × 102 × 22mm, these boxes are designed to fit conveniently inside Australia Post Small Satchels, making them a practical and economical packaging solution for eCommerce businesses, retailers and online sellers.

📦 Product Details

• Box Type: Die-Cut Self-Locking Mailer Box
• Internal Dimensions: 155 × 100 × 20mm
• External Dimensions: 160 × 102 × 22mm
• Size: 15.5 × 10 × 2cm
• Weight: 20g per box
• Bundle Measurement: 520 × 300 × 200mm
• Closure: Self-Locking / Tape-Free
• Material: Corrugated Cardboard
• Colour: White
• Pack Size: 100 Boxes
• Custom Branding: Logo printing available

⭐ Key Features

• Lightweight 20g construction helps minimise packaging weight
• Strong and durable corrugated cardboard
• Self-locking die-cut design
• No tape or glue required for closure
• Compact and slim profile
• Designed to fit inside Australia Post Small Satchels
• Recyclable and eco-conscious packaging
• Clean, professional appearance
• Easy to assemble and pack
• Ideal for high-volume eCommerce fulfilment
• Available in a convenient 100-box pack
• Custom logo printing available

📦 Usage & Applications

These compact 155 × 100 × 20mm mailer boxes are ideal for securely shipping small, lightweight products.

Perfect For:

• eCommerce orders
• Jewellery and accessories
• Mobile phone accessories
• Small electronics
• Cosmetics and beauty products
• Small fashion accessories
• Gifts and promotional items
• Samples and sample kits
• Subscription box inserts
• Greeting cards and stationery
• Small retail products
• Online marketplace orders
• Direct-mail packaging

🚚 Australia Post & Satchel Shipping

The slim 160 × 102 × 22mm external dimensions make these die-cut mailers suitable for placing inside Australia Post Small Satchels. This combination provides an additional layer of structure and product protection while maintaining a compact shipping profile.

The lightweight 20g box weight is also useful for businesses looking to keep packaging weight and postage costs under control.

🌱 Eco-Friendly Packaging

Made from corrugated cardboard, these mailer boxes provide a recyclable alternative to plastic-based packaging. Their lightweight construction also helps reduce unnecessary packaging material while providing reliable protection for small products.

🏷️ Custom Logo Printing

Make your packaging part of your brand experience with custom logo printing. Add your business logo to create a professional appearance, strengthen brand recognition and enhance the customer unboxing experience.

Why Choose These Die-Cut Mailer Boxes?

✔ 155 × 100 × 20mm internal size
✔ Lightweight 20g per box
✔ Self-locking, tape-free design
✔ Strong corrugated cardboard construction
✔ Fits inside Australia Post Small Satchels
✔ Ideal for small eCommerce products
✔ Compact and postage-friendly
✔ Recyclable and eco-conscious
✔ 100-box pack
✔ Bundle measurement: 52 × 30 × 20cm
✔ Custom logo printing available