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NK-MB-50 • Verified Physical Spec Series 50 Corrugated Mailer Box (440x300x40mm)
Certification
FSC-C158941
Compression
32 ECT
Eco Standard
EU PPWR 2026
Corrugated Shipping & Mailer Boxes • Structure: FEFCO 0427 (Roll End Tuck)

Series 50 Corrugated Mailer Box (440x300x40mm)

Self-locking roll end tuck mailer (FEFCO 0427). Tested to 32 ECT edgewise crush.

Interior Clearance
440 x 300 x 40 mm (17.3 x 11.8 x 1.6 in)
Paperboard Composition
250gsm Virgin Kraft / 120gsm Fluting / 250gsm Testliner
Unit Volume (CBM)
5.28 m3
Pilot MOQ (Fast Run)
500 pcs
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Application Suitability:
✓ E-Commerce DTC Shipments✓ Subscription Boxes✓ Cosmetics & Skincare Kits✓ Apparel & Accessories

Engineering & Logistics Data for NK-MB-50

Detailed manufacturing tolerances, container load estimates, and environmental barrier compliance parameters.

Manufacturing SKU Code NK-MB-50 (Standard Pre-Tooled Specification)
Standard Structure Code FEFCO 0427 (Roll End Tuck)
Internal Clearance Dimensions 440 x 300 x 40 mm (17.3 x 11.8 x 1.6 in)
Paper & Greyboard Matrix 250gsm Virgin Kraft / 120gsm Fluting / 250gsm Testliner
Edge Crush Test (ECT) Strength 32 ECT (TAPPI T 811 Method)
Mullen Burst Strength 195 PSI (TAPPI T 810 Sidewall Puncture Resistance)
Unit Shipping Volume 5.28 m3 per unit
40ft High Cube Container Capacity Approx. 1,287 units (Based on ISO 1200x1000mm Pallet Stacking)
Printing & Finishing Capabilities CMYK + Spot Pantone Offset, Aqueous Matte Varnish, Hot Foil Stamping, Registered Embossing
Environmental Certification 100% Curbside Recyclable (CEPI / PTS Method 021/97) • FSC-C158941 • 100% PFAS-Free
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