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Envelope Products
Business Envelopes
#10 Envelopes
#9 Envelopes
6×9 Envelopes
9×12 Envelopes
Extra-Large Envelopes
Custom Window Envelopes
Direct Mail Envelopes
Hot Note® Sticky Note Envelopes
Trailing Edge Envelopes
Rip-Ope Envelopes
Zip-Strip Envelopes
Reveal Envelopes
Sim-Pull® Envelopes
Non-Mailable Envelopes
Drive-In Bank Envelopes
DVD & CD Envelopes
Photo Envelopes
Seed Envelopes
Lightweight Packaging & Fulfilment Envelopes
Recyclable Padded Mailer
Protec™ Envelopes
Privacy Defender Envelopes & Sleeves
Tyvek® Envelopes
Coatings, Finishes and Inks
Finishes
Metallic Ink
Embossed Envelopes
Envelopes with Foil
Metallic Paper
Special Design
Custom Envelopes
Performance Plus Mail Envelopes
ALTA Eco-Friendly Reusable Envelopes
Bangtail Envelopes
Eco-Paper Options
Printed Products
Printed Products
Continuous Forms
Buck Slips
Direct Mail Inserts
Self Mailers
Uncompromised Check Solutions
Presentation Folders
Peel and Reveal Mailpieces
Labels
Sticky Notepads
Buck Slips for Direct Mail and Monthly Statements
Print Services
Tension Direct
Gift Lift™ Matching Gift Program
Tension Design Group
Customer Inventory Management Website
Envelope Know-How
Envelope Size Charts
How an Envelope Is Made
Quality at Work
Ink Production
Transpromotional Envelopes
Direct Mail Envelopes
Glossary of Envelope Terms
Print Processes
Resources
USPS Promotions & Incentives
White Papers
Industry Report
USPS Resources
About Tension
Careers
Sustainability
Locations
Events
Newsroom
Tension International
History
Continuous Improvement
Diverse Suppliers
Contact Us
Blog
Envelope Size
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Envelope Size
May 21, 2020
History of Envelope Size Names
Learn how common envelopes got their name.
Erin Moloney
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: History of Envelope Size Names