c0, C1, C2, C3, C4, C5, C6, C7, C8, C9, C10

Select the envelope size from the 'Dimension' selector and the unit from the 'Unit' selector - the dimensions shall be proven in the dimensions field. This envelope originated in Germany in the 1920's and was known as DIN Lang, but DL is now extra generally expanded to 'Dimension Lengthwise'. This size is defined in the ISO standards for envelope sizes, as the standard would have been remiss in omitting probably the most commonly used enterprise envelope dimension. The envelope sizes might differ from tiny to large, and there are dozens of them of sizes out there.

Although you'll hardly use more than 4-5 commonest sizes in your on a regular basis practice, it's a good to have an understanding of other possible sizes and styles. They are value-efficient, since the identify and deal with exhibits by means of the window, eliminating the necessity to tackle the envelope. Theoretically, almost every envelope sort and measurement might have a window, this generally is dependent upon the producer. The commonest (and recommended by USPS) window size is 1 ⅛ x 4 ½, and the position ⅞ in from left and ½ (usually ⅝) in from bottom, however there are many variations.

The following diagrams show C4, C5 and C6 envelopes compared to A4 paper measurement (the envelope being proven in brown with the paper shown as gray) as may be seen in the envelope size first diagram the C4 envelope can contain an A4 sheet, the C5 envelope can contain an A4 sheet folded in half (an A5 sheet) and the C6 envelope can comprise an A4 sheet folded in half twice (an A6 sheet).

For C4 envelopes, the top edge of the window needs to be either 27 mm or 45 mm from the top fringe of the envelope. UK: The window on a DL envelope should be ninety three x 39 mm giant, and located 20 mm from the left and fifty three mm from the top of the envelope. The proper formatting and handle place on an envelope is required to facilitate mail processing by optical character recognition equipment, utilized by many postal services for sorting mail.