Product Video
Custom Printed Self-Sealing Mailer Box
Add Charm to Your Packaging with Cardboard Gable Boxes Our Cardboard Gable Boxes combine distinctive roof-top aesthetics with practical auto-lock bottoms for easy, tool-free assembly. The unique peaked design creates an instantly recognizable package that delights customers of all ages. Why Brands Choose Gable Boxes: ✓ Roof-Top Design — Eye-catching shape stands out on shelves and in deliveries ✓ Auto-Lock Bottom — Quick 10-second assembly, no glue or tape needed ✓ Fold-Flat Shipping — Reduces storage and shipping costs significantly ✓ Versatile Applications — Perfect for kids' products, party favors, food, gifts ✓ Flexible MOQ — Low minimums to test designs before scaling Ideal for birthday parties, holiday promotions, wedding favors, bakery items, and any product that deserves a touch of whimsy and charm.
Versatile self-sealing mailer box design offers easy pack-and-ship for e-commerce brands, perfect for subscription boxes and retail shipping.
Customized Pricing
FOB China Port ? Price varies by size, material & quantity
Get your quote in 24 hours + Free design consultation
Supply Chain Certification Support
Technical Specifications
Structure
F/E/B/EE/BE/FF flute corrugated + laminated surface. Self-sealing mechanism provides secure closure without tape or glue.
Surface Material
200-350gsm White/Grey/Black/Kraft/Coated. Custom surface materials available for brand-specific requirements.
Closure
Self-sealing base + tuck-in flap. No adhesive required - saves packaging time and reduces material costs.
Folded Profile
Folds flat to 15-50mm. F flute (~0.8mm): ~15mm, E flute (~1.5mm): ~18mm, B flute (~3mm): ~25mm, EE/BE/FF double-wall: ~35-50mm. Space-efficient for storage and shipping.
Load Capacity
Up to 20kg. F flute (~0.8mm): light items to 3kg, E flute (~1.5mm): standard to 8kg, B flute (~3mm): heavy to 15kg, EE/BE/FF double-wall: heavy duty to 20kg.
Printing
CMYK, Pantone, Screen (200 LPI). Full-color branding with vibrant color reproduction. Custom print area available - discuss your branding needs.
Finishing
Gloss/Matte Lamination, Gold/Silver Foil, Spot UV, Soft-Touch. Enhances visual appeal and provides extra protection.
MOQ
500-1000 pieces per design. Sample orders of 10-50 pieces available for quality verification before bulk production.
Lead Time
10-15 business days standard. Rush orders (7-10 days) available with 15-20% surcharge. Sample: 5-7 days.
Packaging
Flat-packed for shipping efficiency. 50-200pcs per carton. Sea freight recommended for cost savings on large orders.
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.
Embossing
Raised patterns for tactile premium feel and brand texture.
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.
Customized
Cosmetics, Jewelry, Small Gifts
Customized
Smartphone Cases, Accessories
Customized
Tablets, Books, Clothing
Customized
Electronics, Multiple Items
Customized
Heavy Items, Bulk Products
Customized
Premium Gifts, Large Items
Common Mistakes to Avoid
Wrong Flute Selection
Key Consideration: F flute is thinnest (0.8mm) for lightweight items; E flute (1.2mm) offers balance; B flute (2.5mm) provides maximum strength.
Tip: F/E for cosmetics and accessories, B for clothing and heavier products, EE/EB for industrial applications.
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: fold-flat boxes have weight limits when assembled.
Tip: Request moisture-resistant coating or laminated surface for marine/humid destinations.
Underestimating Stack Load
Key Consideration: Self-sealing boxes have weight limits when stacked in transit.
Tip: Specify maximum stack height and weight; consider reinforced self-sealing or double-wall construction.
Pricing
Packaging Collections
Material Selection Guide
Choose the right materials for your packaging needs
📦Base Board (9 Options)
| Category | Available Materials |
|---|---|
| Paperboard | Corrugated Board / Greyboard / White Board / Black Board / Kraft Board / White-lined Chipboard / White-top Chipboard / Honeycomb Board / MDF Board |
🎨Surface Paper (15 Options)
| Category | Available Materials |
|---|---|
| Paper | Coated Paper / Offset Paper / Kraft Paper / Metallic Paper (Gold/Silver) / Pearl Paper / Touch Paper / Leatherette Paper / Art Paper / Cotton Rag Paper / Recycled Paper / Aluminum Foil Paper / Tracing Paper / Copy Paper / Glassine Paper / Holographic Paper |
🧵Surface Material (15 Options)
| Category | Available Materials |
|---|---|
| Fabric & Leather | Flannel / Leather / PU Leather / Genuine Leather / Vegan Leather / Linen / Canvas / Cotton Cloth / Silk / Non-woven Fabric / Oxford Cloth / Nylon / Polyester / Suede |
🛡️Interior Lining & Cushioning (25 Options)
| Category | Available Materials |
|---|---|
| Foam & Plastic | EVA Foam / Sponge / Pearl Cotton (EPE) / EPS Foam / XPS Foam / PU Foam / Molded Pulp / Blister Packaging (PVC / PET) / Plastic Tray |
| Paper-based | Greyboard Insert / Cardstock Insert / Folded Paper Insert / Corrugated Divider / Corrugated Roll / Honeycomb Board Insert |
| Fabric | Velvet Lining / Flannel Lining / Non-woven Bag |
| Bags & Fillers | OPP Bag / PE Bag / Cotton Bag / Linen Bag / Air Bubble Film / Air Column / Inflatable Bag / Paper Crinkle Fill |
💡 Need help customizing?
Need help customizing the material combinations for your specific product? Just share your product type and use case — I'll recommend the best pairing.
Finishing Options
Production Process
Factory Production Video
Shipping & Packaging
200 units per carton. Reinforced packaging ensures safe international delivery.
Supply Chain Capabilities
Daily Capacity
50,000+ 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 |
|---|---|---|
| fold-flat Design | Yes (Space Saving) | Fixed shape only |
| Free Plain Samples | Yes (shipping applies) | Charge for samples |
| Sample Refund | 100% refundable | Often not refundable |
| Response Time | 24 hours | 2-5 business days |
| Design Consultation | Free expert advice | Extra charge or none |
| Quality Assurance | Quality Assured | Varies significantly |
| MOQ Flexibility | From 200+ pcs | Often 1000+ pcs |
| Global Shipping | 80+ countries | Limited regions |
Perfect For
Frequently Asked Questions
What is your return/exchange policy?
Quality inspection is conducted upon receipt. Claims must be submitted within 7 days of receiving goods. Defective products are eligible for free replacements. Please provide photos and order details when filing a claim.
What materials are used for self-sealing mailer boxes?
Self-sealing mailer boxes are made from corrugated cardboard with premium laminated surface. The peel-and-seal strip provides easy closure without tape or glue. Perfect for e-commerce, retail, and subscription products.
What is the weight capacity of self-sealing mailer boxes?
Our self-sealing mailer boxes support 500g to 20kg depending on corrugated flute grade and board thickness. E-flute for lightweight items, B-flute for heavier products.
How does the self-sealing mailer box work?
Self-sealing mailer boxes feature a peel-and-seal strip on the flap. Simply peel back the release liner and press to seal securely. No tape, glue, or tools required. Ships flat for efficient storage.
What are the advantages of self-sealing mailer box design?
Self-sealing mailer boxes offer quick pack-and-ship convenience with peel-and-seal closure. The premium laminated surface enables vibrant printing while providing moisture resistance and a premium unboxing experience.
What printing and finishing options are available?
We offer offset printing, flexographic printing, embossing/debossing, foil stamping (gold/silver), spot UV, and soft-touch lamination for premium appearance.
What is the minimum order quantity?
MOQ is Flexible for standard sizes. Sample orders are available for quality verification.
Can self-sealing mailer boxes be customized with logos?
Yes, we offer custom logo printing via offset or flexographic printing. Embossing, debossing, and foil stamping are available for premium branding effects.
What industries use self-sealing mailer boxes?
Self-sealing mailer boxes are popular for e-commerce brands, subscription boxes, cosmetics, apparel, electronics accessories, retail gifts, and any business needing quick, professional shipping packaging.
Are self-sealing mailer boxes eco-friendly?
Yes, we use recyclable cardstocks and water-based inks. FSC-compliant materials are available upon request. Biodegradable foam alternatives are available.
What is the production lead time?
Standard production takes 15-20 working days. Sample production is 5-7 days. Rush orders (8-10 days) are available with 20% surcharge.
🎁 New Customer Offer
First-time customers get exclusive benefits:
Sample Available
Contact for details
Bulk Discount
Special pricing for first order
Free Dieline
+ Design artwork suggestions
Quality Control Process
Every order goes through our rigorous 5-step quality inspection
Raw Material Test
Paper weight, thickness, burst strength
Printing Check
Color accuracy, registration, coverage
Die-Cut Inspection
Dimensions, clean cuts, proper scoring
Assembly Test
Easy fold, secure closure, structural integrity
Final Packaging
Bundle count, carton protection, labeling
From inquiry to delivery — your complete ordering timeline
→ Quote within 24h
& dieline approval
sample (3-5 days)
15-20 working days
Balance & ship
Total timeline: ~4-7 weeks (sea freight) | ~3-4 weeks (air freight)