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A2 Envelopes
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A2 Envelopes: Send An Elegant Message

Need the perfect envelopes for your party invitations or greeting cards? Our square flap A2 envelopes measuring 4.375"x5.75" are the perfect size! These multifunctional envelopes come in basic white wove, linen and metallic pearl in ice, gold, champagne and silver hues. Our metallic pearl envelope collection makes the perfect accessory for wedding invitations, galas, and other elegant gatherings.

At 4OVER4.COM, we use top quality paper stock for our blank A2 envelopes, so you get stylish envelopes at prices that the competition just can't beat! Quantities for our envelopes start at 50 and are inkjet and laser printer compatible. If ordering 250 or more of our printing envelopes, we will gladly print your information on our white wove envelopes, simply submit your file and leave the rest to us. When you shop with us, you can take advantage of free proofs before you pay, low minimums and fast turnaround times!

We are passionate about what we do and it shows! We are the leader in online printing because we believe in supplying high-end printing products at reasonable prices. For exceptional customer service, choose the professionals at to help you get what you need every time!

A2 Envelopes And Much, Much More

When ordering your new envelopes, feel free to check out our user-friendly instant price calculator to get a full look at our extensive line of envelopes. With dozens to choose from, we have one for every occasion and business need. Let's take a look at some of them:

  • #10, #9, #8, #7 and #6
  • A4, A6 and A7, A8, A9, and A10
  • 5", 5.5", 6" and 6.5" squares
  • Royal Linen
  • Metallic Pearl
  • Royal Laid neutral options
  • Many more!

The Truth Behind Size Nomenclature

Have you ever wondered why envelope sizes are called A2, A4 or A5? Many people come to us and ask where that naming came from, why do we use the letter A and a number to describe preset envelope sizes. And it's a fair question because nowadays this is a widely accepted way of naming different industry sizes, but its origin and logic seem to be a mystery for anyone who isn't acquainted with the printing market. Even many industry veterans wouldn't be able to explain how this nomenclature works. So, here it goes.

This is no coincidence, there's a mathematical equation that reflects this ratio and was arguably invented in 1786 by German scientist Georg Christoph Lichtenberg who through a written letter to his colleague Johann Beckmann explained how he thought basing a paper size on an aspect ratio of √2 was a clear benefit to simplify paper sizes. This aspect ratio is the one that even today, more than 230 years later, still reigns in the paper industry.

A2 Envelopes Flat Invitations Printed Envelopes
Min. Price $7.99 $18.00 $98.44
Min. Quantity 50 25 250
Turnarounds 1 Business Days Same Day to 3 Business Days 1 to 7 Business Days

Customers Interested In A2 Envelopes Also Purchased:

  • Flat Invitations
  • Printed Envelopes
  • Response Cards
  • Folded Invitations
  • Letterheads

Quick Specs:

  • Over 100 Commercial, Invitation & Specialty Envelopes
  • Up to 50% cheaper than staples
  • Metallic Pearl Silver, Gold, Ice and Champagne
  • Laid gray, white and natural
  • Linen white
  • Low 50 Minimums
  • Ready in 1 Day

Available Paper Types:

  • Envelope

Also in This Category:


Customer Reviews

Great service

By A on December 04, 2019

I will be coming back for more.

By Ethan Thomas on December 03, 2019

Totally worth every penny
Great service

By Jacob C on November 30, 2019

I will definitely recommend to my friends.
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Great service
By A on December 04, 2019
I will be coming back for more.
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Why 4over4? is an Online Printing Service located in New York City, specializing in digital and offset printing for personal and business purposes since 1999.

With a growing list of novelty and specialty printing papers and one of a kind finishes we cater to both large businesses and individual needs with high quality prints at exceptional prices, whether you're looking for a fully customized or standard solution. Leverage our easy-to-use Instant Price Calculator, Fast (Even Same Day!) Turnarounds, Vast Product Inventory and Strong Customer Support; we're the one-stop-shop for all your printing needs on the web.

Take a look at our extensive line of business cards, postcards, brochures, posters, greeting cards, booklets, letterheads, envelopes, rack cards, bookmarks, labels and stickers, vinyl banners, canvas prints, promotional printed items, large format prints and rigid signs - if you don't see it listed, contact us directly at Support Team and we'll do our best to provide you with exactly what you need.

We deliver all our products worldwide! Take advantage of our online ordering process: to get started simply upload your design and after you've approved your free online proof, you'll receive your order right at your doorstep whether you're in the big apple or anywhere else!

If you have any questions, you may call Toll Free: 888.5.4over4 (546-8374), Monday-Friday, 10am-6pm E.S.T