Custom Post Office Cardboard Boxes
Postal-Ready Cardboard Boxes for Safe, Standardized Shipping
Our Post Office Cardboard Boxes are specifically designed to meet the dimensional and structural requirements of major postal and courier services. Made from durable, lightweight corrugated board, these boxes ensure safe, efficient, and cost-effective shipping for e-commerce parcels, small goods, and international mail.
Available in a range of standard postal sizes, these boxes help you reduce postage costs, avoid dimensional surcharges, and ensure compatibility with automated handling systems. Whether you’re a small business shipping nationwide or a fulfillment center managing global deliveries, our boxes provide a reliable, professional packaging solution for postal use.
Specifications & Customization Options – Postal-Compliant, Lightweight, and Fully Customizable
Our post office cardboard boxes are built to align with standard mailing regulations and packaging guidelines set by global postal services (e.g., USPS, Royal Mail, La Poste, Australia Post). We offer a range of sizes, board grades, and branding options to meet your shipping and operational needs.
| Specification Item | Available Options |
|---|---|
| Material Type | Corrugated Cardboard: E-flute (light duty), B-flute (standard), BC-flute (heavy duty) |
| Board Strength | ECT 32–44, bursting strength 200–275 lb, crush-resistant corners |
| Postal Sizes Supported | – Small Parcel (220×160×77mm) – Medium Parcel (305×229×153mm) – Large Parcel (400×300×200mm) – Custom sizes available |
| Box Structure | Regular Slotted Carton (RSC), Tuck-top Mailer, Die-cut with locking tabs |
| Closure Options | Flap and tape, self-locking tabs, peel & seal strip (optional) |
| Printing Capabilities | Flexographic (1–2 color logo), Digital (full panel), Pre-printed shipping label zone |
| Surface Finishes | Kraft brown, white liner, matte or semi-gloss coating |
| Barcode/Label Zones | Blank or pre-marked label areas for postage and tracking |
| Certifications | FSC, RoHS, REACH, ISO 9001 |
| MOQ | Starting from 500 units per size/design |
We also offer optional internal inserts, cushioning liners, or tamper-evident sealing features for enhanced parcel protection and regulatory compliance.
Structure & Style Design – Engineered for Mailing Efficiency and Protection
Our post office cardboard boxes come in a variety of functional structures, each optimized for secure transport, ease of labeling, and compatibility with automated postal systems. Whether you need a compact tuck-top mailer or a robust shipping carton, we have the right structure for your postal logistics.
1. Regular Slotted Carton (RSC) – Standard Postal Box
The most common and cost-effective box structure with top and bottom flaps that meet in the center when closed. Ideal for shipping boxed items via postal or courier services.
Best For:
- General postal shipments
- E-commerce products
- Distribution warehouses
Features:
- Flaps secured by tape
- Supports stacking and palletization
- Economical and easy to store flat-packed
2. Tuck-Top Mailer Box – Retail-Ready Postal Packaging
A one-piece die-cut design with a hinged lid and side flaps, offering a clean look and secure closure without tape.
Ideal For:
- Subscription boxes
- Direct-to-consumer retail packaging
- Light to medium-weight postal items
Advantages:
- Self-locking structure
- Friction closure or peel-and-seal strip (optional)
- Great unboxing experience
3. Die-Cut Postal Box with Locking Tabs
Precision die-cut structure with integrated locking tabs for enhanced closure security, ideal for flat or fragile items that require protection and handling control.
Used For:
- Books, documents, framed prints
- International document shipping
- Postage-size sensitive goods
Box Strengths:
- Clean edges for label application
- Tamper-evident closure options
- Optional perforation for tear-open designs
4. Crash-Lock Bottom Carton (Quick-Assembly Shipping Box)
Fast-fold bottom design that automatically locks into place when opened, perfect for high-volume packing environments.
Recommended For:
- Fast-paced packing stations
- Medium-weight e-commerce parcels
- Time-sensitive fulfillment processes
Key Benefits:
- No taping required for base
- Speeds up packing workflow
- Compatible with void fill and inserts
5. Custom Partitioned Box (Internal Divider Design)
Designed with corrugated or chipboard dividers for shipping multiple items in one parcel while ensuring separation and safety.
Applications Include:
- Fragile or glass items
- Gift sets and product bundles
- Sample kits or promotional mailers
Structural Support:
- Keeps contents from shifting during transit
- Easy to assemble insert trays
- Custom-fit for postal dimensions
All structures are foldable, recyclable, and available in custom print options, giving you control over both logistics efficiency and visual presentation.
Materials & Printing Options – Lightweight, Postal-Approved Materials with Customizable Branding
Our post office cardboard boxes are produced using premium-grade corrugated board to provide the perfect balance of shipping protection, postage efficiency, and brand visibility. All materials are chosen to meet postal compliance, sustainability requirements, and your marketing goals.
1. Corrugated Board Options
| Board Type | Thickness | Best Use Case |
|---|---|---|
| E-Flute (~1.5–2mm) | Lightweight | Postal envelopes, retail mailers, small product shipping |
| B-Flute (~3mm) | Standard | Medium-weight packages, e-commerce shipments |
| BC-Flute (~5mm) | Reinforced | Larger or fragile items needing stronger protection |
Performance Attributes:
- Edge Crush Test (ECT) ratings from 32–44
- Bursting strength from 200–275 lb
- Die-cut ready for auto-folding and machine assembly
- Suitable for stacking and long-distance delivery
2. Eco-Friendly & Postal-Compliant Materials
All boxes are made using environmentally responsible materials, designed to reduce environmental impact while complying with postal handling requirements.
- FSC-certified corrugated paper
- 100% recyclable and biodegradable
- RoHS and REACH compliant inks and adhesives
- Low-VOC, AZO-free, and formaldehyde-free options
3. Surface Finishes for Durability & Appearance
- Kraft Brown (Natural Finish): Economical and postal-compliant surface
- White Coated Liner: Clean background for high-clarity logos or instructions
- Matte Coating (Optional): Anti-scuff surface with print enhancement
- Moisture-Resistant Finish: Ideal for long-distance or export parcels
4. Custom Printing & Label Integration
Brand your mailers and communicate effectively with high-precision print zones and labeling areas.
| Printing Method | Application |
|---|---|
| Flexographic Printing | 1–3 color logos, handling marks, postal icons |
| Digital Printing | Full-panel branding, QR codes, campaign messaging |
| Screen Printing (Optional) | Simple spot treatments or small-batch design runs |
Printing Features:
- Postal label zones with “FROM/TO” pre-printed
- Barcodes, tracking fields, and postage guide lines
- Branded messaging: “Fragile,” “Thank You,” “Recycle Me”
Our material and printing system ensures your boxes are durable in transit, compliant with shipping standards, and aligned with your brand’s image and sustainability mission.
Application Scenarios – Postal-Optimized Packaging for E-Commerce, Logistics, and Retail
Our post office cardboard boxes are purpose-built to meet the needs of businesses and institutions that rely on postal shipping as part of their fulfillment, delivery, or return processes. Their standard dimensions, protective design, and branding compatibility make them ideal for a wide range of mailing operations.
1. E-Commerce Fulfillment & Direct Shipping
Online sellers use our boxes for order fulfillment, product delivery, and return logistics, ensuring safe and professional delivery experiences.
Ideal For:
- Apparel, cosmetics, small electronics, books
- Subscription boxes or curated bundles
- Domestic and international parcel shipping
Benefits:
- Postal dimensional compliance reduces shipping costs
- Tamper-evident sealing options available
- Custom branding improves unboxing experience
2. Courier & Postal Logistics Operations
These boxes meet the handling and stacking requirements of major courier companies and national postal systems, providing compatibility with sorting machines and label systems.
Use Cases:
- Third-party logistics (3PL) services
- Warehouse-to-customer shipping
- Automated mail center packaging
Features:
- Uniform sizing for streamlined stacking
- Clear label zones for sorting and tracking
- High crush resistance during pallet loading
3. Retail Packaging & Gift Delivery
Retail brands use post office boxes for direct-to-customer gift shipping, promotional events, or online store orders that require secure and appealing packaging.
Applications Include:
- Online boutique delivery
- Seasonal gift sets
- Loyalty reward packages
Advantages:
- Appealing print options for marketing campaigns
- Safe handling of fragile or promotional items
- Custom-fit inserts for product presentation
4. Corporate Mailrooms & Institutional Mailing
Offices, schools, and government departments use these boxes to send documentation, supplies, or sample kits between departments or to external recipients.
Common Examples:
- HR document dispatch
- IT hardware returns
- Administrative materials shipping
Key Benefits:
- Easy labeling with printed FROM/TO fields
- Space-saving storage when flat-packed
- Versatile sizing for various internal needs
5. International Export Packaging
Our boxes are also used for export mailings, helping brands reduce dimensional weight fees while meeting postal inspection standards.
Used By:
- Cross-border sellers on Amazon, eBay, Etsy
- International warehouse consolidation services
- NGOs or education providers distributing kits abroad
Postal-Ready Features:
- Supports customs documentation labeling
- Durable enough for long-haul shipment
- Available in metric or imperial dimensions
Whether you’re shipping a single book or fulfilling thousands of daily orders, our post office cardboard boxes provide a reliable, scalable, and postal-approved solution for secure and efficient mail delivery.
Customization Services & Packing Specifications – Flexible Postal Packaging Designed for Your Brand and Workflow
We provide full OEM/ODM customization services for post office cardboard boxes, tailored to the packaging, branding, and logistics needs of postal operators, fulfillment centers, e-commerce platforms, and corporate shippers.
OEM & ODM Box Manufacturing
We support:
- OEM Production: Use your existing dimensions, print layout, and branding specs
- ODM Development: Collaborate on size, material, structure, and design to suit postal usage, automation compatibility, or international shipping
Customization Options Include:
- Exact fit for your SKU or product type
- Locking tabs, tape-free closures, crash-lock bases
- Inserts for multi-item packaging or fragile protection
- Special openings or tabs for customer-friendly returns
Branded Printing & Labeling Features
Maximize visual impact and operational clarity with custom graphics:
- Your logo or branding on any panel
- FROM/TO label zones pre-printed or blank
- Postal handling marks (“FRAGILE,” “DO NOT BEND,” etc.)
- QR codes, barcodes, batch codes, or traceability fields
- Multilingual printing for cross-border shipping
Packing & Export Formats
Our boxes are flat-packed to minimize storage costs and optimize warehouse space. They’re easy to assemble and designed for rapid packing operations.
Packing Specifications:
- 10–50 pcs per bundle depending on size
- Bundled with shrink wrap or strapped for carton packing
- Labeled master cartons with order/lot number
- Palletized loading for LCL/FCL shipments
Global Shipping & Documentation
We offer full trade and export support for international customers:
- Trade Terms: EXW, FOB, CIF, DDP available
- Documents Provided: Invoice, Packing List, Certificate of Origin, HS code
- Optional freight coordination and warehouse drop-ship available
Lead Times & Production Capacity
- MOQ: 500 boxes per design or size
- Sample Development: 3–7 working days (plain or printed)
- Bulk Production: 15–25 working days depending on volume
- Shipping: Available via sea, air, or express courier
No matter your postal shipping volume or destination, we help you develop postal-ready, branded, and operationally efficient cardboard boxes that meet your packaging goals and logistics needs—globally and at scale.
Key Advantages & Technical Features – Reliable, Postal-Approved Boxes Optimized for Efficiency
Our post office cardboard boxes are engineered to provide consistent protection, optimal shipping dimensions, and branding flexibility, making them ideal for businesses that depend on postal services for timely and secure product delivery.
1. Postal Service Compatibility
Designed to meet the size and handling standards of global postal systems.
- Optimized for dimensional weight pricing
- Fits sorting machinery and stacking protocols
- Supports label zones for barcodes, stamps, and tracking numbers
- Ideal for USPS, Royal Mail, Australia Post, Canada Post, etc.
2. Sturdy and Lightweight Design
Built from quality corrugated board, our boxes strike a balance between durability and mailing efficiency.
- Withstands crushing, drops, and rough handling
- Supports weight loads from 1–20 kg (depending on grade)
- Edge-crush resistant walls ensure structural stability
- Lightweight to minimize postage costs
3. Space-Saving Flat-Pack Format
All boxes are shipped and stored flat to reduce freight volume and warehouse space.
- Saves up to 80% storage space
- Easy to assemble—tool-free designs
- Suitable for high-volume fulfillment environments
4. Cost-Effective Logistics Integration
Reduce total cost of shipping with boxes designed for automation and bulk handling.
- Crash-lock and self-sealing designs improve packing speed
- Compatible with conveyor systems, 3PL, and packing lines
- Fewer damages = fewer returns and claims
5. Brand Visibility with Functional Printing
Turn every parcel into a branded, professional message to your customer.
- Flexo and digital printing for logos, instructions, promotions
- Label-ready zones for frictionless scanning
- Messaging areas: “Thank you,” “Recycle Me,” or return instructions
6. Eco-Friendly and Fully Recyclable
Sustainable by design, our boxes meet growing regulatory and consumer expectations.
- Made with FSC-certified kraft and white liners
- 100% recyclable and biodegradable
- RoHS and REACH compliant adhesives and inks
- Ideal for companies with ESG or green packaging goals
7. Versatility Across Industries
Used by startups, global retailers, postal services, and institutions alike.
- Suitable for retail, apparel, electronics, books, cosmetics, and more
- Compatible with direct-to-consumer, B2B fulfillment, and institutional logistics
- Scalable production for pilot runs or mass deployment
With postal-approved sizes, smart design, and robust performance, our cardboard mailing boxes deliver cost savings, branding potential, and shipping reliability—box after box.
Frequently Asked Questions (FAQ)
Q1: What is your minimum order quantity (MOQ)?
Our standard MOQ is 500 units per size or design. For mixed-size orders or trial programs, MOQ flexibility may be available upon request.
Q2: Can I order custom printed postal boxes with my company logo?
Yes. We offer:
- Flexographic printing for logos, handling marks, and instructions
- Digital printing for full-panel branding or campaigns
- Custom label areas, “FROM/TO” fields, and tracking-compatible designs
Q3: Do your boxes comply with standard postal size and weight guidelines?
Absolutely. Our boxes are designed to match the sizing requirements of:
- USPS Flat Rate and Priority Mail
- Royal Mail Small, Medium, and Large Parcel standards
- Australia Post, Canada Post, and other major systems
We also offer custom sizing to fit specific courier platforms or export regulations.
Q4: Are the boxes strong enough for international shipping?
Yes. Our boxes are made with ECT 32–44 corrugated board and optional BC-flute for high-impact resistance. They are suitable for:
- Long-distance courier transport
- Sea/air freight
- Fragile or high-value postal shipments (with inner inserts)
Q5: How are the boxes delivered? Are they pre-assembled?
All boxes are delivered flat-packed for cost-efficient shipping and storage.
- Easy to assemble with fold/lock or tape closures
- Optional crash-lock bottom for faster setup
- Instruction diagrams available for new users or staff
Q6: Are your materials recyclable and eco-compliant?
Yes. All materials are:
- FSC-certified and 100% recyclable
- RoHS / REACH compliant
- Low-VOC, AZO-free, and formaldehyde-free
Ideal for companies promoting sustainable logistics or green shipping initiatives
Q7: Can I get a sample before bulk order?
Yes. We offer:
- Blank sample boxes for fit testing within 3–5 days
- Printed samples with your branding in 5–7 working days
Shipping is available via express courier worldwide.
Q8: What is your standard lead time for production and delivery?
- Sample lead time: 3–7 working days
- Bulk production: 15–25 working days depending on complexity and volume
- Shipping options: Sea, air, express; with global documentation provided
Q9: Can these boxes be used for returns or reverse logistics?
Yes. Many clients use our boxes for dual-purpose packaging (outbound + return).
- Add return label zones or dual address areas
- Reinforce openings for resealing (peel-and-seal available)
- Pre-score flaps for easy reassembly by end-users
Q10: Do you support large-volume or long-term supply agreements?
Yes. We work with logistics providers, fulfillment centers, and postal distributors on:
- Annual supply contracts
- Scheduled delivery plans
- Warehouse stock + drop-shipping services
