Board Back Envelopes

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Our team reviews requests in real-time during business hours (Mon-Sat 8:30AM-6PM GMT+8).

Standard Sizes

Product
Code
W x H + flap
(in.)(mm)
BB3 (A3)11.7 x 16.5 + 1.8297 x 420 + 45
BB4 (A4)8.3 x 11.7 + 1.8210 x 297 + 45
BB5 (A5)5.8 x 8.3 + 1.8148 x 210 + 45
BB6 (A6)4.1 x 5.8 + 1.8105 x 148 + 45
BBDL (DL)8.7 x 4.3 + 1.8221 x 109 + 45

Details

Board Back Envelopes: Rigid Protection with Eco-Responsibility

1. Structural Superiority

  • 2mm thick recycled fiberboard (90% post-consumer content) + 250gsm kraft paper exterior, achieving 12psi crush resistance (ASTM D642 certified).
  • ​​

    Laser-scored edges enable clean opening without tools, preserving contents integrity.

     

2. Military-Grade Security

  • ​Pressure-sensitive adhesive leaves “VOID” patterns upon unauthorized access (FBI Chain of Custody Standard 28 CFR § 25.5).
  • Wax-infused surface repels moisture and dust, surviving 14 days in 90% humidity.

Specification

Brand Name
SEMLIN
Material
Kraft Paper,cardboard paper
Design & Printing
Customized designs and printings are available
Feature
Bio-degradable, Recyclable
Application
Can be used to post tape , CD, camera , lens , film , certificate , gifts, books etc.
Samples
Free Samples in stock for checking quality before bulk production
Package
By opp bags and corrugated boxes
Delivery Time
Within 15 days of order confirmation
Our advantages

Factory directly sale, very good quality and competitive price. 

Professional in the manufacture of air cushion packaging, best service.

Disclaimer
This product has acquired the relevant product qualification(s)/license(s) of certain applicable country/countries.

Application Suggestions

Logistics express delivery
Photo
Electronic commerce
Stationery and gifts
Bookcase
CD/ DVD

Jitycargo

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