Tools You Can Use
The following is a guide to envelope types, styles, and sizes. Below you will find the different styles of envelopes. These envelope sizes apply only to the United States. Standard International envelope sizes differ.
Commercial Envelopes
![](https://www.linemark.com/wp-content/uploads/2021/09/Commercial-Envelopes_5.png)
![A blue envelope with a white envelope size guide on it.](https://www.linemark.com/wp-content/uploads/2021/09/6.png)
#5
![A blue envelope with a white envelope on it following an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/614.png)
![A blue envelope on a white background follows an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/612.png)
#6 1/4
![A blue envelope with a white envelope on it following an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/614.png)
![A blue envelope with a guide to envelope sizes on it.](https://www.linemark.com/wp-content/uploads/2021/09/7.png)
![A guide to envelope sizes: a blue envelope on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/712.png)
![A blue envelope on a white background, as per the Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/734.png)
![A blue envelope on a white background with an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Monarchpointed-flap.png)
![A blue envelope with an envelope size guide on it.](https://www.linemark.com/wp-content/uploads/2021/09/8-58Check.png)
![A blue envelope on a white background, featuring an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/9.png)
![A blue envelope on a white background follows a size envelope guide.](https://www.linemark.com/wp-content/uploads/2021/09/10.png)
#10
![A blue envelope with a white envelope on it, featuring an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/11.png)
![](https://www.linemark.com/wp-content/uploads/2021/09/Commercial-Envelopes_5.png)
#11
![A size envelope guide: A blue envelope on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/12.png)
![A guide to envelope sizes: a blue envelope on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/14.png)
![A blue envelope on a white background, following the Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/16.png)
Baronial Envelopes
Used for formal invitations, greeting cards, and some stationery, Baronial is an open side, almost square envelope with deep pointed flaps and diagonal seams. Send formal announcements or use Baronial envelopes with fancy social stationery.
![A white envelope with dots on it, following the a size envelope guide.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_2-bar.png)
![A white envelope on a white background, accompanied by an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_4-bar.png)
4 Bar
![A white envelope on a white background, adhering to the envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_5-bar@2x.png)
![A white envelope on a white background, demonstrating a guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_5.14-bar.png)
![A blue envelope with white dots on it and an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_5.12-bar.png)
![A blue envelope, with an envelope size guide on it, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_6-bar.png)
![A white envelope, according to the Envelope Size Guide, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_gladstone.png)
![A white envelope on a white background as per the envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_astor.png)
![A white envelope, detailed in an Envelope Size Guide, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_belmont.png)
![A guide to envelope sizes displayed on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Baronial-Envelopes_lee.png)
Lee
Square Envelopes
Square envelopes are very distinctive due to their large square flaps and side seams, but the nonstandard size and shape can increase postage costs. Square envelopes are used primarily with announcements, advertising, and specialty greeting cards or other mailings where the sender wants to draw attention to the contents.
![A blue square envelope with white dots on it comes with an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_5.png)
![A white envelope with a blue polka dot pattern according to the Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_5.5.png)
![A white envelope with a blue polka dot pattern and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_6.png)
![A white envelope with a blue background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_6.5.png)
![A white envelope with a light blue background featuring an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_7.png)
![A guide to envelope sizes: a white envelope with a blue background.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_712.png)
![A light blue envelope on a white background, following an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_8.png)
![A white envelope with a light blue background, following the envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_812.png)
![A white envelope with a blue background and a size envelope guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_9.png)
![An envelope with a light blue background featuring an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_9.5.png)
![A white envelope with a light blue background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_10.png)
![A blue envelope with a white background, including an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Square-Envelopes_13.5.png)
Announcement Envelopes
Square envelopes are very distinctive due to their large square flaps and side seams, but the nonstandard size and shape can increase postage costs. Square envelopes are used primarily with announcements, advertising, and specialty greeting cards or other mailings where the sender wants to draw attention to the contents.
![A white envelope on a white background with an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_A1.png)
![A white envelope on a white background, accompanied by an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_A2.png)
![A white square envelope on a white background, following a guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_A6.png)
![A white envelope, fitting the guide to envelope sizes, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_A7.png)
![A white envelope on a white background, following an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_A8.png)
![A white envelope on a white background, featuring an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_Simline-A10.png)
![A white envelope according to an A size envelope guide on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Announcement-Envelopes_A10.png)
Booklet Envelopes
Open side envelopes with small square or wallet flaps and side seams, booklet envelopes are ideal for overall printing and mailing. Booklet envelopes are used not only for booklets but for brochures, catalogs, annual reports and other multi-page mailings.
![A brown envelope from an envelope size guide on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_3.png)
![An image of a brown envelope on a white background, featuring an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_4.14.png)
![A brown envelope on a white background, as indicated in an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_412.png)
![An image of a brown envelope on a white background, featuring an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_5.png)
![A beige envelope icon on a white background, serving as a guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_6@2x.png)
![A brown envelope on a white background as per the envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_6.12.png)
![A brown envelope, featured in an envelope size guide, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_6.58.png)
![A brown envelope on a white background as per the envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_6.12.png)
![A brown envelope featuring a guide to envelope sizes on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_7.png)
![A brown envelope on a white background, following a guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_7.14.png)
![A brown envelope on a white background, guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_7.12.png)
![A brown envelope, following the guide to envelope sizes, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_8.png)
![A beige envelope on a white background, adhering to an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_9.png)
![A beige envelope size guide on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_9.12.png)
![A beige envelope on a white background, including a guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_10.png)
![A brown envelope on a white background with an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Booklet-Envelopes_13.png)
Catalog Envelopes
Open-end style envelopes with wallet flaps and center seams, catalog envelopes are used for magazines, reports, catalogs, and other heavyweight materials. Policy envelopes, used for insurance policies, wills, mortgages, and other legal papers sometimes come with a full-view window on the face.
![](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_7-glove.png)
![](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_8-glove.png)
![](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_9-policy.png)
![](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_10-policy.png)
![A picture of a wooden box with a door on it, including an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_11-policy.png)
![A tan envelope with a brown background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_12-policy.png)
![A tan envelope with a brown background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_14-policy@2x.png)
![A wooden door on a white background, featuring a guide to envelope sizes.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_1-scarf.png)
![A wooden door with a wooden frame and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_3-scarf.png)
![A tan envelope with a brown background, following a size envelope guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_4.25-scarf.png)
![A tan envelope on a white background, following an A size envelope guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_6-scarf.png)
![An envelope with a beige background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_1.png)
![A brown envelope on a white background, adhering to the envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_134.png)
![A beige envelope on a white background, featuring an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_2.png)
![A wooden door with a wooden frame and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_3-scarf.png)
![A tan envelope on a white background, following an A size envelope guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_6-scarf.png)
![A brown envelope on a white background follows the Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_7.png)
![A wooden envelope with a brown background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_8.png)
![A guide to envelope sizes: a brown envelope on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_912.png)
![A wooden envelope with a brown background, following the Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_934.png)
![A size envelope guide: A brown envelope on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_10.12.png)
![An image of a brown envelope on a white background, featuring an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_12.12.png)
![A brown envelope, following the envelope size guide, on a white background.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_13.5.png)
![A tan envelope with a brown background and an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_14.14.png)
![A tan envelope with a brown background and an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_14.14.png)
![An envelope with a brown background and an envelope size guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_15.png)
![A brown envelope on a white background, featuring an Envelope Size Guide.](https://www.linemark.com/wp-content/uploads/2021/09/Catalog-Envelopes-_15.12.png)