Product Video
Auto Lock Mailer Box
Auto lock mailer boxes feature a smart self-locking base design that automatically snaps into place during assembly. Combined with B/E/F flute corrugated construction and 200-350gsm laminated paper surface, these boxes offer exceptional protection with a premium look. Perfect for e-commerce, subscription boxes, and retail shipping.
Space-saving fold-flat design reduces storage and shipping costs by up to 60%.
$0.35 - $2.50 / pc
FOB China Port | Price varies by size, material & quantity
Get your quote in 2 hours + Free design consultation
Supply Chain Certification Support
Technical Specifications
Structure
B/E/F flute corrugated + laminated surface
Surface Material
200-350gsm White/Grey/Black/Kraft/Coated
Closure
Auto-lock base + tuck-in flap
Folded Profile
15-25mm (varies by flute type)
Load Capacity
Up to 15kg (E flute light, B/F standard, E+B heavy duty)
Printing
CMYK, Pantone, Screen (200 LPI)
Finishing
Lamination, Foil, Spot UV, Soft-Touch
MOQ
500 pieces
Lead Time
10-15 business days
Packaging
Flat-packed, 50-200pcs/carton
Gloss Lamination
High-shine reflective finish for vibrant colors and premium look.
Matte Lamination
Soft-touch elegant finish with anti-scratch properties.
Foil Stamping
Gold, silver, or metallic foil for luxury branding effects.
Spot UV
Highlight specific areas with glossy UV coating contrast.
Soft-Touch
Velvety texture for ultra-premium unboxing experience.
Quick reference for commonly requested sizes. Custom sizes available upon request.
200 x 150 x 80 mm
Cosmetics, Accessories, Small Gifts
250 x 180 x 100 mm
Clothing, Apparel, Small Electronics
300 x 200 x 120 mm
Shoes, Books, Larger Products
350 x 250 x 150 mm
Subscription Boxes, Multiple Items
400 x 300 x 180 mm
Heavy Items, Bulk Products
450 x 350 x 200 mm
Premium Retail, Large Items
Common Mistakes to Avoid
Wrong Flute Selection
Key Consideration: E flute is light but less rigid; B flute is stronger but thicker; F flute is micro for premium surfaces.
Tip: Choose B or E+B flute for heavy items, E or F for lightweight premium packaging.
Insufficient Surface Weight
Key Consideration: 200gsm may be too thin for large boxes; 350gsm adds cost unnecessarily for small boxes.
Tip: Match surface weight to box size: small boxes 200-250gsm, medium 250-300gsm, large 300-350gsm.
Ignoring Humidity Resistance
Key Consideration: Corrugated boxes absorb moisture, losing rigidity in humid conditions.
Tip: Request moisture-resistant coating or laminated surface for marine/humid destinations.
Underestimating Stack Load
Key Consideration: Auto-lock boxes have weight limits when stacked in transit.
Tip: Specify maximum stack height and weight; consider reinforced auto-lock or double-wall construction.
Proven ROI Impact
*Industry averages based on Dotcom Distribution 2024 Unboxing Survey (n=1,400+ online shoppers) and EcoPacki customer feedback data.
Premium unboxing experience drives customer loyalty and encourages repeat purchases.
Unique fold-flat to assembled unboxing experience that customers love to share on social platforms.
Professional, high-quality packaging elevates brand value and customer trust immediately.
Corrugated protection with premium laminated surface ensures product safety and delight from delivery to unboxing.
Product Gallery
Product Details
Material Quality
Finishing Options
Custom Inserts
Production Process
Factory Production Video
Shipping & Packaging
50-200 units per carton (flat-packed). Reinforced packaging ensures safe international delivery.
Supply Chain Capabilities
Daily Capacity
80,000+ pieces per day. Scale production to meet your demands.
Clients Served
500+ B2B clients worldwide. Trusted by global brands.
Global Export
Exported to 80+ countries. Reliable international shipping.
24/7 Support
2-hour response guaranteed. Dedicated account manager.
Why Choose EcoPacki
See how EcoPacki stands out from other packaging suppliers.
| Feature | EcoPacki | Others |
|---|---|---|
| Flute Options | B/E/F + combinations | Single flute only |
| Free Plain Samples | Yes (shipping applies) | Charge for samples |
| Sample Refund | 100% refundable | Often not refundable |
| Response Time | 2 hours | 2-5 business days |
| Design Consultation | Free expert advice | Extra charge or none |
| Quality Assurance | Quality Assured | Varies significantly |
| MOQ Flexibility | From 500 pcs | Often 1000+ pcs |
| Global Shipping | 80+ countries | Limited regions |
Perfect For
Frequently Asked Questions
What materials are used for auto lock mailer boxes?
Auto lock mailer boxes are made from B/E/F flute corrugated cardboard with a surface layer of 200-350gsm laminated paper (white card, grey board, black card, kraft, or coated paper). The auto-lock base uses interlocking tabs for tool-free assembly.
What is the difference between B, E, and F flute?
B flute (approx. 3mm) offers excellent compression strength, ideal for heavy products. E flute (approx. 1.5mm) is thinner with a premium flat surface, perfect for lightweight items. F flute (approx. 0.8mm) is micro-flute for ultra-premium surface quality. E+B or B+F combinations offer heavy-duty protection with good surface quality.
What is the weight capacity of auto lock mailer boxes?
Load capacity varies by flute type: E flute supports up to 5kg, B flute up to 10kg, and E+B double-wall up to 15kg. For heavy items, we recommend B flute or E+B construction with reinforced auto-lock corners.
How does the auto-lock mechanism work?
The auto-lock base features interlocking tabs and slots pre-cut into the corrugated board. When you fold the sides inward, the tabs automatically snap into locking slots, creating a secure base without tape or glue. The top closure uses a standard tuck-in flap design.
What printing and finishing options are available?
We offer offset printing, flexographic printing, embossing/debossing, foil stamping (gold/silver), spot UV, soft-touch lamination, and matte/gloss lamination on the surface paper layer for premium appearance.
What is the minimum order quantity?
MOQ is 500 pieces for standard sizes. For custom flute/material combinations, MOQ starts at 1,000 pieces. Sample orders of 5-10 pieces are available for quality assessment.
Can auto lock mailer boxes be customized with logos?
Yes, we offer custom logo printing via offset or flexographic printing. The laminated surface provides excellent printability for sharp, vibrant branding. Embossing, debossing, and foil stamping are available for premium effects.
What industries use auto lock mailer boxes?
Auto lock mailer boxes are popular for e-commerce, subscription services, apparel, footwear, cosmetics, electronics accessories, books, gourmet food, and Premium Retail packaging.
Are auto lock mailer boxes eco-friendly?
Yes, corrugated cardboard and paper are recyclable. We use water-based inks and offer FSC-compliant materials upon request. Biodegradable and compostable surface options are available.
What is the production lead time?
Standard production takes 10-15 working days. Sample production is 5-7 days. Rush orders (7-10 days) are available with 15-20% surcharge.
New Customer Offer
First-time customers get exclusive benefits:
Sample $30-100
Plain sample + shipping applies
5% Off
First bulk order discount
Free Design
Professional dieline assistance
Quality Control Process
Every order goes through our rigorous 5-step quality inspection
Raw Material Test
Flute compression, surface weight, burst strength
Printing Check
Color accuracy, registration, coverage
Die-Cut Inspection
Dimensions, clean cuts, auto-lock tab alignment
Assembly Test
Auto-lock engagement, secure closure, stack test
Final Packaging
Bundle count, carton protection, labeling
How to Order
From inquiry to delivery - your complete ordering timeline
Inquiry & Quote
Submit specs → Quote within 24h
Design Confirm
Artwork review & dieline approval
Sample
Pre-production sample (3-5 days)
Production
30% deposit → 10-15 working days production
QC & Ship
Inspection photos → 70% balance → Ship
Total timeline: ~4-7 weeks (inquiry to delivery, sea freight) | ~3-4 weeks (air freight)