Envelope Sizes
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Frequently Asked Questions
What are the standard commercial envelope sizes?
The most common standard commercial envelope sizes are the #10 envelope (4 1/8" x 9 1/2"), which is widely used for business letters, invoices, and statements, and the #9 envelopes (3 7/8" x 8 7/8"), typically used as business reply envelopes. Both are essential industry standards for efficient office and business correspondence.
What is the difference between #10 Regular and #10 Booklet envelopes?
The distinction lies in the flap placement. A #10 regular envelope has the flap on the long side (an "Official" style), making it best for letters and single documents. A #10 Booklet envelopes have the flap on the short side, which is ideal for easily inserting multiple brochures, booklets, or multiple sheets without folding.
Where can I buy #10 envelopes in bulk?
You can buy #10 envelopes in bulk directly from wholesale suppliers. Options include gummed, peel & seal, window, and colored #10 envelopes sold in economical boxes of 500 or 1000, which are designed specifically for high-volume business mailing.
What are A-series envelopes used for?
A-series envelopes (A1–A10) are primarily used for social stationery. They are most popular for greeting cards, invitations, and announcements. For instance, the A7 envelope (5 1/4" x 7 1/4") is the standard choice for wedding invitations and upscale event stationery.
What is a machinable envelope?
A machinable envelope is constructed to precise postal service specifications, ensuring it runs efficiently and reliably through automated sorting machines. This design makes them the ideal choice for bulk direct mail campaigns, invoices, and large-scale statement processing.
What are peel and seal envelopes?
Peel and seal envelopes use a high-quality adhesive strip under a protective liner, eliminating the need for moistening. They are faster, cleaner, and provide a highly secure, tamper-resistant seal, making them the most popular choice for businesses sending large volumes of mail.
Are there colored business envelopes available?
Yes. In addition to classic white, businesses can choose from a wide range of colored #10 envelopes in options like red, blue, green, black, and metallic shades. Colored envelopes are perfect for marketing mailers, promotions, or any correspondence meant to stand out in the mailbox and reinforce brand identity.
What envelope sizes are best for square cards and mailers?
For square stationery, popular choices include 5 x 5, 6 x 6, 6 1/2 x 6 1/2, 8 x 8, and 13 x 13 envelopes. These square envelopes are widely used for greeting cards, non-traditional invitations, and creative direct mail campaigns that aim to achieve a premium look.