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US Envelope Series

6 1/4

6 1/4

Belonging to the North American envelope sizes, the 6 1/4 paper size is a unique entity in its own right. This particular dimension, measuring 6 inches by 3.5 inches, is not part of any ISO or ANSI series, making it an intriguing outlier in the world of standardized paper sizes.

The 6 1/4 size is primarily used for personal stationery and business correspondence. Its compact dimensions make it ideal for enclosing smaller items such as checks or gift cards. Despite its modest size, this paper format can still accommodate a surprising amount of information.

6 1/4 paper dimensions


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2A046.81 x 66.221189 x 1682119 x 1683370 x 4768
A120.51 x 0.7113 x 181 x 237 x 51
4A066.22 x 93.621682 x 2378168 x 2384768 x 6741
A110.71 x 1.0218 x 262 x 351 x 74
A101.02 x 1.4626 x 373 x 474 x 105
A3+12.95 x 19.02329 x 48333 x 48933 x 1369
A1+23.98 x 35.98609 x 91461 x 911726 x 2591
A0+35.98 x 50.87914 x 129291 x 1292591 x 3662
A64.13 x 5.83105 x 14811 x 15298 x 420
A55.83 x 8.27148 x 21015 x 21420 x 595
A48.27 x 11.69210 x 29721 x 30595 x 842
A311.69 x 16.54297 x 42030 x 42842 x 1191
A91.46 x 2.0537 x 524 x 5105 x 147
A216.54 x 23.39420 x 59442 x 591191 x 1684
A82.05 x 2.9152 x 745 x 7147 x 210
A123.39 x 33.11594 x 84159 x 841684 x 2384
A72.91 x 4.1374 x 1057 x 11210 x 298
A033.11 x 46.81841 x 118984 x 1192384 x 3370

Interestingly enough, the origins of this specific paper size can be traced back to the early days of banking when checks were first introduced. The dimensions were designed to perfectly fit a standard check, thus ensuring secure and efficient handling during transactions.

In terms of printing compatibility, most home and office printers are equipped to handle this envelope size without any issues. This makes it a versatile choice for both personal and professional use.

Overall, while the 6 1/4 may not be part of any recognized series like ISO or ANSI, its unique characteristics and historical significance make it an important player in the realm of paper sizes.

Other Formats in the US Envelope Series

Interesting facts about 6 1/4

1. The Origin of 6 1/4 Paper

6 1/4 paper is part of the ANSI/ASME Y14.1 standard series, which defines the sizes for engineering and architectural drawings in the United States. It was introduced to provide a smaller alternative to the commonly used 8 1/2 x 11 inch paper.

2. A Unique Size

Measuring approximately 158 x 225 mm (6.22 x 8.86 inches), 6 1/4 paper falls between the popular A5 (148 x 210 mm) and B5 (176 x 250 mm) sizes, making it a unique choice for specific applications.

3. Versatility in Printing

The compact size of 6 1/4 paper makes it ideal for printing various items such as booklets, brochures, flyers, and pocket-sized notebooks. Its dimensions allow for easy handling and portability.

4. Niche Use in Engineering

In engineering fields, particularly mechanical drafting, some professionals prefer using smaller sheets like the ANSI Y14 series papers due to their convenience when working with intricate technical drawings or sketches.

5. Compatibility with Envelopes

A standard envelope size that pairs well with a sheet of folded or unfolded 6¼ paper is known as "A-Envelope" or "A-Size Envelope." This compatibility adds to its usefulness when sending out small documents or invitations.

6. Historical Evolution of Paper Sizes

Paper sizes have evolved over time across different regions globally. The ANSI Y14 series is part of a long history that includes various systems such as ISO (International Organization for Standardization) A and B series, British Imperial sizes, and the American Letter and Legal sizes.

7. The Influence of ISO Standards

The ISO A series, which includes popular sizes like A4 (210 x 297 mm), has gained widespread international adoption due to its efficient use of space and compatibility with printing equipment. However, the ANSI Y14 series remains prevalent in specific industries within the United States.

8. Paper Sizes in Different Countries

While many countries have adopted standardized paper sizes, some regions still use unique or traditional formats. For example, Japan commonly uses the JIS (Japanese Industrial Standards) B series for paper dimensions.

9. The Role of Paper Weight

Paper weight is an essential consideration when choosing a specific type for printing purposes. 6 1/4 paper is available in various weights such as 20 lb bond (75 gsm), 24 lb bond (90 gsm), or even heavier options depending on the desired durability or thickness.

10. Environmental Impact

In recent years, there has been a growing emphasis on sustainable practices within the paper industry. Choosing eco-friendly options like recycled or FSC-certified papers can help reduce deforestation and minimize environmental impact when using any size of paper.