Product Video
Custom Mailer Boxes with Clear Window - Dual-Side Inside & Outside Printing
Let your product speak for itself. Our Window Mailer Box features a clear PET window that showcases your product through the packaging, combining the protection of a mailer with the visibility of a display box. Customers can see exactly what they're getting before they open it.
Built for visibility—product preview that drives purchase confidence.
$0.50 - $3.00 / pc
FOB China Port · Price varies by size, material & quantity
Get your quote within 24 hours + Free design consultation
Supply Chain Certification Support
Get Your Sample Service Today!
Plain samples FREE (shipping only) · Custom printed samples $50-150, 100% refundable on bulk order
Request Sample ServiceTechnical Specifications
| Parameter | Value |
|---|---|
| Material | Corrugated Cardboard (E/B/C/BE/EE Flute) |
| Face Paper | White/Black/Grey Cardboard (150-300gsm) |
| Bursting Strength | E Flute: 4-8 kgf/cm2 | B Flute: 6-10 kgf/cm2 | BE Flute: 10-14 kgf/cm2 |
| Edge Crush Test (ECT) | E Flute: 2-4 kN/m | B Flute: 3-5 kN/m | BE/EE Flute: 5-8 kN/m |
| Printing | CMYK Full-color / Pantone Spot Color / Screen Printing (up to 1440dpi) |
| Surface Finishing | Gloss/Matte Lamination, UV Coating, Foil Stamping, Embossing |
| MOQ | 500 pieces |
| Lead Time | Standard: 10-15 business days | Rush: 7-10 days (+15-20% surcharge) |
| Weight Capacity | E Flute: 3-5kg | B Flute: 5-8kg | BE Flute: 8-12kg | EE Flute: 6-10kg |
| Packaging | Flat-packed, 25pcs/bundle, 200pcs/carton |
How to Choose the Right Flute: E-flute for premium print quality, B-flute for balanced protection, C-flute for standard shipping, BE-flute for heavy-duty export, EE-flute for extra smooth printing surface.
| Flute Type | Thickness | Best For | Print Quality |
|---|---|---|---|
| E Flute | 1.1-1.7mm | Electronics, Cosmetics, Jewelry | Excellent |
| B Flute | 2.3-3.0mm | E-commerce, Clothing, Accessories | Good |
| C Flute | 3.5-4mm | Standard shipping, General products | Good |
| BE Flute | 4-5mm | Heavy duty, Export, Fragile items | Good |
| EE Flute | 3-4mm | Extra smooth surface, Premium printing | Excellent |
Note: Weight capacity depends on box dimensions and construction. Contact us for specific recommendations.
Quick reference for commonly requested sizes. Custom sizes available upon request.
| Dimensions (L×W×H) | Typical Products | Flute Suggestion |
|---|---|---|
| 200×150×80 mm | Cosmetics, Jewelry, Small Gifts | E Flute |
| 250×180×100 mm | Smartphone Cases, Accessories | E Flute |
| 300×200×120 mm | Tablets, Books, Clothing | B/BE Flute |
| 350×250×150 mm | Electronics, Multiple Items | BE Flute |
| 400×300×180 mm | Heavy Items, Bulk Products | BE/EE Flute |
| 450×350×200 mm | Premium Gifts, Large Items | EE Flute |
Common Mistakes to Avoid
Wrong Flute Selection
Key Consideration: Using E-flute for heavy items causes box collapse.
Tip: Use BE-flute for items over 8kg or for international shipping.
Ignoring Production Time
Key Consideration: Ordering too close to launch date.
Tip: Allow 2-3 weeks for production plus shipping time.
Poor File Quality
Key Consideration: Low-resolution artwork results in blurry printing.
Tip: Provide 300dpi minimum, convert text to outlines, use CMYK color mode.
No Protective Inserts
Key Consideration: Products move inside box causing damage.
Tip: Add custom inserts for fragile or multiple items.
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.
Clear PET Window creates Instagram-worthy unboxing moments that customers love to share.
Professional, high-quality packaging elevates brand value and customer trust immediately.
Reinforced Clear PET Window ensures product protection and delight from delivery to unboxing.
Product Gallery
Product Details
Material Quality
Finishing Options
Custom Inserts
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.
Response within 24 Hours
24-hour response guaranteed. Dedicated account manager.
Why Choose EcoPacki
See how EcoPacki stands out from other packaging suppliers.
| Feature | EcoPacki | Others |
|---|---|---|
| Clear PET Window | Yes (Inside & Out) | Mostly outside only |
| Free Plain Samples | Yes (shipping applies) | Charge for samples |
| Sample Refund | 100% refundable | Often not refundable |
| Response Time | Within 24 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 |
Why Brands Choose Us
Perfect For
FAQ
• Free Dieline Templates: Accurate dieline files for your designer
• Design Consultation: Structural design, material selection, printing advice
• Artwork Review: We check files for bleed, resolution, color mode issues
For custom structural design, a $100-300 fee may apply (refundable upon bulk order).
For custom sizes or special finishing (foil, embossing): 1,000-3,000 pieces
Samples:
• Stock samples: $5-20 (existing sizes, unprinted)
• Custom samples: $30-100 (your design, 7-10 days)
• Sample fee is refundable upon bulk order confirmation
• PayPal: For samples and orders under $500
• L/C: Letter of Credit for orders over $10,000
• Western Union: For small orders
Trade terms: FOB, CIF, EXW available
• Rush orders: 7-10 days (20-30% surcharge)
Timeline:
Design confirmation: 1-3 days
Sample production: 5-7 days
Bulk production: 10-15 days
Shipping: 15-30 days (sea) / 5-7 days (air)
• AI, PDF, EPS (vector preferred)
• PSD, PNG, TIFF (300dpi+ minimum)
Requirements:
• CMYK color mode
• Convert fonts to outlines
• Include 3mm bleed
We provide free artwork review before production!
• Report within 7 days with photos/videos
• We replace defective products OR refund
• Third-party inspection (SGS, Intertek) available
• Defect rate: Less than 1%
We send production photos before shipping as part of QC.
• Gloss/Matte lamination
• Soft-touch lamination
• Spot UV
• Foil stamping (gold/silver/custom)
• Embossing/Debossing
Costs vary by complexity. Contact us for custom quote.
• 100% recyclable paper-based boxes
• FSC certified paper available
• Soy-based inks for eco printing
• Food-safe materials compliant with FDA standards for direct food contact
• REACH compliant for EU market
Contact us for FSC certificates and test reports.
🎁 New Customer Offer
First-time customers get exclusive benefits:
Sample Service
Plain sample + shipping applies
5% Off
First bulk order discount
Free Design
Professional dieline assistance
Related Products
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
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 days production
QC & Ship
Inspection photos → 70% balance → Ship
Total timeline: ~4-7 weeks (inquiry to delivery, sea freight) | ~3-4 weeks (air freight)