Us standard envelope sizes8/26/2023 ![]() If you want to know more about other common envelope sizes, please refer to the common envelope sizes. DL Envelope SizeĭL Envelope Size: 110 mm × 220 mm (4.33 in × 8.67 in) Fold the long side of A4 paper into four equal parts on average, or fold the short side of a5 size into two equal parts, and the obtained sheet size right for the size of DL envelope. Accurately speaking, the DL envelope size is based on the sheet applied to A4 paper size. Although its size does not comply with the requirement of width-height ratio of C envelope size, the size of DL commercial envelope is the only one based on ISO standard size except C envelope size. In the application of business letters, DL-sized envelopes are widely used. The tolerance is ☓ mm (0.12 in) when both the length and width exceed 600 mm (23.6 in).ĭL Envelope Size | Business Envelope Size.The tolerance is ☒ mm (0.08 in) when both the length and width are between 150 mm and 600 mm (5.9 in and 23.6 in),.The tolerance is ☑.5 mm (0.06 in) when both the length and width are less than 150 mm (5.9 in),.Same tolerance standards are followed as ISO A paper sizes: ISO C Envelope Sizes Chart: C1, C2, C3, C4, C5, C6, C7, DL envelope size Dimension Tolerance of ISO C Envelopes And of course, a larger A size paper can be folded to fit for a smaller C size envelope. Larger or smaller sizes are not commonly used, because it is not convenient for mailing and delivery. ![]() The most common used ISO C envelopes are C4, C5, and C6 size. The length of the sheet is equal to its width times 1.4142.No more than 6-1/8 inches high x 11-1/2 inches long x 1/4 inch thick. Named from C0 to C10 and even after: C0, C1, C2, C3, C4, C5, C6, C7, C8, C9, C10. To be eligible for mailing at the price for letters, a piece must be: Rectangular At least 3-1/2 inches high x 5 inches long x 0.007 inch thick.That is, the ratio of length to width is √2:1, and the size of each envelope is exactly equivalent to what of two envelopes of next number. Just because ISO C size envelopes are designed to encapsulate A size paper, their sizes also follow the most of rules as of A paper sizes definded by ISO216. ISO C Envelope Sizes: C1, C2, C3, C4, C5, C6, C7, DL envelope size C Envelope Sizes Rules That is to say, each C envelope with a serial number corresponds to an A series paper with the same serial number, their sizes are close, but C is slightly larger. ![]() Requests for this offer will be automatically opted-in to our email list.As part of ISO216 defined size series, ISO C envelopes are mainly used to adapt to ISO A series size papers. NOTE: This complimentary offer is only open to current and potential business to business clients and as such, Western States reserves the right to refuse any requests. Smaller C series envelopes may be used for folded. Postal Standards Template for Letter-Sized MailĬomplete the form below to receive a complimentary wall chart. C series envelopes are designed to hold standard A series paper when unfolded i.e C4 for A4 C5 for A5 etc. Everything on the poster is printed to size, meaning that you can hold your mail pieces up to it to see if they fall within certain sizes or specs. Looking for a quick reference for standard envelope sizes? We have a beautifully printed 24 x 35" full-color poster that illustrates a variety of helpful envelope and postal information.
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