Envelope design and manufacturing standards guides
What Is an X-Ray Envelope? An x-ray envelope — also called an x-ray film envelope or radiology envelope — is a light-proof paper jacket…
Introduction When you specify an envelope, you must choose a flap style. Often confused with the closure method (like gum or self-seal), the flap…
Introduction The C-series envelope sizes — C4, C5, C6, and the DL format — are the international standard, used across the UK, Europe, and…
Introduction The 5×7 envelope — also known as A7 — is the most common invitation and greeting card size. It fits a 5×7 card…
Introduction The 10×13 envelope is the largest standard catalog envelope — roomy enough for thick catalogs, annual reports, legal files, and large documents that…
Introduction The 6×9 envelope is a mid-size envelope — larger than a standard #10, smaller than a 9×12 flat. It’s the go-to for booklets,…
Introduction A self-seal envelope — also called peel-and-seal — has a latex adhesive strip on the flap that seals with simple pressure. No licking,…
Introduction A string and button envelope is a reusable envelope closed with a string wrapped around a button or disc — the classic tie…
Introduction Coin envelopes are the small-envelope family, numbered #1 through #7, designed not for letters but for small items — coins, seeds, jewelry, electronic…
Introduction A catalog envelope is a large, open-end envelope designed to carry flat, unfolded content — catalogs, annual reports, magazines, and marketing booklets. Unlike…