Envelopes By Size

Choosing the correct envelope comes down to insert clearance. Aim for an envelope roughly 1/8 to 1/4 inch larger than your contents so cards and documents slide in easily without catching on the edges.

Our A-series collection covers every standard card dimension:

• A2 (4 3/8 x 5 3/4): Standard fit for quarter-folded notes, RSVPs, and 4x5.5 cards.
• A6 (4 3/4 x 6 1/2): Sized specifically for 4x6 photo prints and postcards.
• A7 (5 1/4 x 7 1/4): The standard envelope for 5x7 wedding stationery and greeting cards.
• A9 & A10: Larger formats for oversized invitations, ceremony programs, and menus.

For tri-folded letterhead, browse standard #10 business envelopes (4 1/8 x 9 1/2). For flat 8.5 x 11 documents or booklets, select 9x12 or 10x13 catalog mailers. We also carry symmetrical square sizes ranging from 5x5 up to 8.5x8.5 inches.

Once you lock in the required dimensions, sort your search by paper weight, flap shape, color, and adhesive type to find the exact configuration.

The standard envelope size that fits a letter is the #10 envelopes, measuring 4 1/8" x 9 1/2". It can comfortably hold a letter-sized paper folded into thirds.

Invitation envelopes typically come in the A2 size, measuring 4 3/8" x 5 3/4". They are commonly used for mailing invitations, thank-you cards, and personalized notes.

The smallest standard envelope size is the A1 envelope, measuring 3 5/8" x 5 1/8". A1 envelopes are commonly used for small cards, RSVPs, and other compact mailings.

Yes, different countries may have their own envelope size standards for international mail. To ensure compliance with international mailing requirements, it is advisable to check with the respective postal service of the destination country.

Yes, envelopes can be custom made to specific sizes. Custom-made envelopes allow you to have full control over the dimensions and design to meet your unique requirements. It is advisable to consult with printing and packaging professionals who can assist you in creating custom envelopes.

Yes, the A5.5 envelope. It measures 6" x 8 1/4" and offers a size option slightly larger than A6 but smaller than A5.

The envelope size commonly used for checks is the #9 or #9 return envelope, measuring 3 7/8" x 8 7/8". These envelopes are specifically designed to fit standard-sized checks.

A 9x12 envelope measures 9" x 12" and is commonly used for mailing flat documents, certificates, photos, and magazines. It provides a larger and more spacious option compared to standard letter-sized envelopes.