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Envelopes - Envelope Sizes - Business Envelopes

Envelopes - Envelope Sizes - Business Envelopes

The Guide to Finding the Right Envelope!

Choosing the right envelope can be hard. There are many different sizes that are best used for specific mailings. See below for information about each envelope!

Regular Envelopes

Regular envelopes are the standard of business envelopes. This product range includes the popular #10 envelope which measures 4 1/8″ x 9 1/2″. #9 regular envelopes (3-7/8″ x 8-7/8″) are one of the most popular commercial-sized envelopes available, commonly used as a reply envelope for invoice and business mailings, sent to recipients inside #10 envelopes in order to mail something back to the sender.

Other popular regular envelopes include:

All regular envelopes feature a solid front with no window, and a basic flap on the back. Some regular envelopes have special features, including security tint to conceal the contents and pre-moistened adhesive flaps for easy closure. Therefore, businesses use these envelopes to send invoices, checks, letters, and other types of mailings. Choose from a wide range of colors, including pastels and bright colors.

Window Envelopes

Window envelopes feature at least one opening on the front of the envelope that allows the contents inside the envelope to show through. Single window envelopes have just one opening for the mailing address, whereas double window envelopes have an opening for the return address as well. Full face envelopes have an opening on the entire front of the envelope, giving a view of the contents inside. Choose from a wide array of sizes and colors to coordinate with your mailing needs, including window envelopes designed for standard business checks.

Common window envelope sizes:

Square Envelopes

Square envelopes are square and symmetrical, appealing to the eye and very stylish. Most square styles have square flaps on the back, but a few have deep triangular contour flaps that nicely offset the square envelope. Sizes range from miniature 5″ x 5″ square envelopes to 13″ x 13″ square envelopes. They are most commonly used with baronial cards for informal mailings, social, and commercial announcements. Choose from a wide range of colors. Keep in mind that when mailing square envelopes through the USPS, you will need additional postage because of the shape.

Learn more about the variety of announcement and invitation envelopes we have and their uses on our site >>>

Catalog Envelopes

The main feature of open end envelopes, also known as catalog envelopes, is the placement of the envelope flap on the short end of the envelope. With or without windows, these durable, high-quality envelopes come in brown kraft, white, and bright or pastel colors. With so many options, first select your size and material (paper or Tyvek). Then, select the appropriate closure mechanism: metal clasp, ungummed, remoistening seal or pressure sensitive seal. There are also clasp envelopes that provide are an alternative to the gum closure. Also, filters in the left column will help you sort for specific needs.

You can choose windowless catalog envelopes or window catalog envelopes. Windowless catalog envelopes ensure that the contents of your package are kept hidden. On the other hand, window catalogs are produced with 28# white sulphite material and have multiple window options so the necessary information on your mail piece can be seen. Catalog envelopes are used for heavy mailing and shipping requirement such as: booklets, bulky documents, catalogs, magazines, sales literature and more! These envelopes range from 2-1/2″ x 4-1/4″ to 22″ x 27″ to fit any size document.

Booklet Envelopes

Booklet envelopes are designed to accommodate larger and thicker mailings, including annual reports, brochures, catalogs and sales literature. These envelopes are also ideal for important documents that should not be folded to fit into a standard envelope. They look professional and help to create branding opportunities for your business. These envelopes range from 4-3/16″ x 9-1/2″ to 12″ x 16″ to fit any size document. The 9″ x 12″ booklet envelope is perfect for mailing unfolded sheets of paper. The 5-3/8″ x 8-7/8″ envelope is ideal for mailing a sheet of paper that is folded in half.

One of the biggest decisions you’ll need to make when choosing your booklet envelopes is whether or not to include a window on the front. Some businesses prefer a flat, windowless appearance for these envelopes in order to allow for including a variety of items to be sent and addresses to be printed individually on the envelope itself. However, if you’re planning a big mailing, you can streamline the process by having addresses printed on the document so that it shows through the clear window. Since our booklet envelopes come with such a wide range of envelop window options, including everything from large showcase windows to small corner windows, you can make sure you get a format that’s optimized for your mailing needs.

Remittance Envelopes

Order your remittance envelopes from the Supplies Shops and save big on bulk orders. Remittance and collection envelopes are used by churches, charities and schools for donations. We carry a wide variety of remittance envelopes in different colors, sizes and styles. Choose from #6-1/4 envelopes, #6-3/4 envelopes, or #9 envelopes for your convenience.

#6-1/4 envelopes have a large printing surface making them suitable to be used as a return envelope. #6-1/4 remittance envelopes measure 3-1/2″ x 6-1/4″ and offer a choice of nine colors or standard white 24# stock. This size is ideal for mail order, subscriptions, donations, coupons, and other general remittance needs. Also, #6-3/4 envelopes can be used as a return envelope. #6-3/4 remittance envelopes measure 3-5/8″ x 6-1/2″ and offer a choice of nine colors or standard white 24# stock. #9 envelopes have a large printing surface and can be used as return envelopes. #9 remittance envelopes measure 3-7/8″ x 8-7/8″ and are commonly put inside of #10 envelopes.

Envelope Size Common Use Colors
#6-1/4 Remittance Envelope 3-1/2″ x 6-1/4″ Return Envelope, Mail Order, Subscriptions, Donations, Coupons White, Goldenrod, Green, Pink, Gray, Blue, Canary, Buff, Creme, Ivory, Lilac
#6-3/4 Remittance Envelope 3-5/8″ x 6-1/2″ Return Envelope, Mail Order, Subscriptions, Donations, Coupons White, Goldenrod, Green, Pink, Gray, Blue, Canary, Buff, Creme, Ivory, Lilac
#9 Remittance Envelope 3-7/8″ x 8-7/8″ Return Envelope, Mail Order, Subscriptions, Donations, Coupons

*Fits perfectly inside of a #10 envelope*

White, Goldenrod, Green, Pink, Gray, Blue, Canary, Buff, Creme, Ivory, Lilac

Coin Envelopes

Despite the increasing use of digital payment methods, currency in the form of coins and paper money is still very much in use in our society. This style is still made of heavy-duty paper to ensure envelopes can hold numerous coins without buckling under the weight. What has improved over the years is the number of money envelope sizes available. Our money envelope measurements range from #00 to #7H, and we leave it up to you to determine what size works best for collecting monies or other uses.

Despite the name, people find them useful for storing all sorts of little items that would normally get lost or create messy clutter. Consider using these envelopes for storing and organizing items such as nails, bolts and screws, thumbtacks, jewelry beads, stones and metal backing or wires, paper fasteners, small machine parts and numerous other small items.

Specialty Envelopes

Specialty envelopes help you achieve specific communication, marketing and sales goals that cannot be met by common standard envelopes. There are also times when the standard envelope size is fine, but you prefer to use an alternative envelope design, which suits your purposes much better. Specialty envelopes are different in material or design from standard envelopes, and are designed to make business operations go more smoothly.

Many of our specialty envelope categories are designed for specific uses to make your shopping experience a breeze. Included in popular designs are specialty envelopes designed to hold currency. Churches enjoy distributing our offering envelopes to their congregations to encourage regular tithing. These envelopes come in a range of attractive colors and they’re a cinch to seal. Money gift envelopes are popular for birthdays, graduations and holidays and you can order your desired quantities of our attractive blank style or choose the cheerful holiday style. Keep monetary deposits protected at all times with our bank deposit envelopes.

Some popular specialty envelopes are:


Envelope Size Common Use Colors/Material
Offering Envelopes 3-1/8″ x 6-1/4″ Churches, Fundraising, Charity, Any type of Money Collection

*perfect for holding cash and checks*

White, Blue, Goldenrod, Gray, Green, Creme, Pink, Canary
Bank Deposit Envelopes 3-1/2″ x 7″

3-1/4″ x 7″

3-3/4″ x 7″

Use for checks, cash, other documents White
Tax Form Envelopes Variety Designed to properly display addresses when tax forms are inserted White, Blue Security Tint
Money Gift Envelopes 2-3/4″ x 6-5/16″ Birthdays, Graduations, Holidays White
Door Hanger Envelopes 4-1/2″ x 10-1/4″ Marketing materials, receipts, invoices White
Job Jacket Envelopes 3-1/2″ x 5″

5″ x 6″

7″ x 9″

10″ x 7″

10″ x 12″

12″ x 9″

13″ x 9″

15″ x 11″

Protect and store work orders, inventory cards, MSDS sheets, SOPs, production schedules, project folders, photos, negatives, digital output Vinyl
Jewelry Envelopes 3-1/8″ x 5-1/2″

3-5/8″ x 6″

Jewelry, Parking Tickets White, Tan / Brown Kraft
Employment Record Envelopes 8-3/4″ x 12″ Holds up to 1/2″ of employee records. Manila
Job Ticket Envelopes 8-3/4″ x 11-1/2″

9-1/2″ x 12″

Holds up to 1/4″ of custom job paperwork for filing. Manila
Policy Envelopes 4-1/2″ x 10-3/8″

4-1/8″ x 9-1/2″

5″ x 11-1/2″

Protects important paper for an extended amount of time. White, Tan / Brown Kraft, Black



If you are still unsure about the envelope you need or have any additional questions email us at [email protected] or call us at 855-632-8520. If our standard envelopes do not fit your needs, we can customize envelopes to your specifications. Click the link below to fill out a quote form.

Click Here to Complete the Custom Envelope Quote Form

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