Understanding Standard Envelope Dimensions and Types
2025-03-24 10:23:28

The significance of envelopes should be understated because they help leave a lasting impression on the recipient with professional appeal. From helping with personal and formal invitations to ensuring the privacy of business documents in a formal setting, envelopes are useful.
Different types of envelopes are used for different purposes. What makes envelopes functional and appealing is the right standard envelope dimensions. This blog has accumulated various types and standard envelope dimensions for your better understanding. Read on to explore more!
What are Custom Envelopes?
Envelopes are essential for retail brands, personal use, corporate, and legal settings. They are mostly made from paper. The making process of an envelope is also as simple as ABC. Envelopes contain a flap to seal important documents, a business card, invitations, and the paper-based promotional items.
Brands use paper envelopes for promotional purposes and to leave a lasting impression on customers. For example, brands send Birthday cards to their customers in printed envelopes to foster brand loyalty while increasing brand awareness.
Types of Custom Envelopes
Before understanding the envelope dimensions, it is important to know about the types of envelope used for different purposes. The following are some major types of envelopes you should consider when customizing for certain purposes:
-
Baronial Envelope
Baronial envelopes are used mostly for formal invitations, announcements, and pleas in different environments. They are larger than normal DL envelopes and used for formal purposes. The Baronial envelope has a deep flap that offers a professional and formal appeal.
-
Commercial Envelope
Commercial envelopes are used in business settings for correspondence. They are shorter than baronial envelopes. Commercial envelopes are used to send letters, mail, invoices, contracts, bills, and business documents. The #10 envelope is an example of the commercial envelope.
-
Booklet Style Envelope
A book-style envelope opens and closes from its longest side. These envelopes are large. They are used to send unfolded materials like small magazines, brochures, pamphlets, and promotional materials. You can customize the length of the flap, plus the size of the envelope according to your brand needs.
-
Square Flap Envelope
Square envelopes are the same as normal envelopes. The difference lies in the shape of the flap that folds down to seal the envelope. Normal envelopes have a triangular flap while square envelopes have a square-shaped flap. Some square-shaped envelopes are used to send pictures and square-shaped printed documents.
-
Envelopes with Window
Any envelope that is customized with a window cut-out is referred to as an envelope with a window. A PVC is inserted on the custom window cut-out to give the recipient a sneak peek of the material sealed inside. These envelopes are used to send fancy invitation cards.
Standard Envelope Dimensions
It is important to know the standard size of envelope packaging to choose the one that aligns with your material’s packaging needs.
Legal Envelope Size
Unfold documents are sent in legal envelopes. The type of envelopes used for legal correspondence normally has the following dimensions:
Business Envelope Size
Professional correspondence at a corporate setting is done using business envelopes.The standard dimensions of business envelope are as follows:
Invitation Envelope Size
The size of the invitation envelope depends on the shape, size, and style of the invitation card. An envelope used for invitations and promotional purposes has the following dimensions:
#10 Envelope Size
It is one of the popular types and sizes of envelopes used widely in the corporate and business settings. The following are standard #10 envelope dimensions:
A2 Envelope Dimensions
A2 are smaller envelopes used for promotional purposes such as sending thank you notes, small birthday cards to customers, and loyalty cards. The standard dimensions of A2 envelopes are as follows:
A5 Size Envelope Dimensions
A5 size envelopes are popular for their functionality and versatility. They can be used to mail letters, invitations, cards, and important documents. The standard sizes are as follows:
A6 Envelope Dimensions
A6 size envelopes are quite similar to A2 because they are also used to mail cards, invitations, and promotional stuff. The minor difference between A2 and A6 size envelopes lies in the dimensions. A6 has the following dimensions:
A7 Envelope Dimensions
A7 envelope size is used to mail large-sized cards, brochures, pamphlets, announcements, and letters. The standard envelope sizes for A7 envelopes are as follows:
DL Size Envelope Dimensions
DL envelopes are used for business correspondence like letters and promotional materials. They generally have the following dimensions:
Conclusion!
The benefits of envelopes in the business sector, corporate setting, and personal use make them popular. However, understanding the types of envelopes helps you choose the right one for you. Get envelopes customized however you like to showcase your brand identity.
Feel free to contact us if you have any questions!