borítékformátum

A borítékformátum, in English envelope format, refers to the standard dimensions and specifications for envelopes used in postal services and business correspondence. These formats are crucial for ensuring that mail can be efficiently sorted, transported, and delivered by postal systems worldwide. While various sizes exist, certain formats are more prevalent due to international standards and common usage.

The most common envelope formats are often categorized by their aspect ratio and intended use. For example, the C series of paper sizes, as defined by ISO 216, heavily influences envelope dimensions. A C5 envelope, designed to hold an A5 sheet folded in half, is a popular choice for business correspondence in many regions. Similarly, C6 envelopes are commonly used for smaller notes or folded A4 sheets.

In North America, different sizing conventions prevail. The #10 envelope is the de facto standard for business correspondence, roughly equivalent in width to a C5 envelope but shorter. Other North American sizes include #9 and #11, typically used for specific mailing purposes.

Beyond dimensions, envelope format also considers features like the placement of the address window, the type of closure (gummed, self-seal), and the paper weight. These elements are standardized to ensure compatibility with automated mail processing equipment and to maintain a professional appearance. Adhering to the correct borítékformátum facilitates smooth mail handling and reduces the likelihood of mail being delayed or returned.