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RAW Series



The SRA3 paper size, a non-standard dimension in the ISO 216 series, is an intriguing entity in the world of print and design. With dimensions of 320mm x 450mm, it offers a larger canvas than the standard A3 size. This additional space provides designers with extra room for bleed areas and crop marks, making it an ideal choice for professional printing projects.

Interestingly, SRA3 is part of the Supplementary Raw Format (SRA) series. This series was specifically designed to accommodate commercial printing processes where slightly larger sizes are required. The 'S' in SRA stands for 'supplementary', indicating its role as a supportive element to the primary A-series.

SRA3 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

Despite not being as widely recognized as its A-series counterparts, SRA3 holds significant value in specialized fields such as graphic design and professional printing. Its unique size allows for high-quality prints with precise detailing - a feature that sets it apart from standard paper sizes.

In terms of international standards, while ISO primarily governs the dimensions of paper sizes globally, ANSI (American National Standards Institute) oversees these specifications within America. However, neither ISO nor ANSI officially recognize SRA3; its existence is more industry-specific rather than standardized.

To sum up, SRA3's unique attributes make it an invaluable asset in professional print and design environments. Its unconventional size caters to specific needs that standard formats cannot fulfill - proving that sometimes stepping outside standardized boundaries can lead to enhanced results.

Other Formats in the RAW Series

Interesting facts about SRA3

SRA3 Paper: Weird and Interesting Facts

1. Origin of SRA3: SRA3 paper size was developed in Germany by the Deutsche Institut für Normung (DIN) as part of the DIN 476 standard series. It was introduced in 1977 and is widely used for commercial printing purposes.

2. Unique Dimensions: The dimensions of SRA3 paper are 320mm x 450mm (12.6 inches x 17.7 inches). It falls between the A3 and B4 sizes, making it slightly larger than A3 but smaller than B4.

3. Standardized Bleed Area: SRA3 paper includes a standardized bleed area, which is an extra margin around the edges of a printed document that allows for trimming without cutting into important content or graphics.

4. Compatibility with A-Series Sizes: SRA3 paper can be easily cut down to fit various A-series sizes, such as A5 or even smaller formats like business cards, while maintaining proper proportions.

5. Popular Choice for Brochures and Flyers: Due to its versatile size, SRA3 is commonly used for printing brochures, flyers, posters, and other marketing materials that require a larger format than traditional letter-sized papers.

6. Ideal for Digital Printing: SRA3 paper is highly compatible with digital printing presses due to its dimensions and standardized bleed area, allowing for efficient production processes with minimal waste.

7. Availability in Different Weights: Just like other paper sizes, SRA3 comes in various weights ranging from lightweight options suitable for documents to heavier cardstock ideal for invitations or covers.

8. European Preference: SRA3 is more commonly used in Europe and other parts of the world that follow the ISO paper size standards, while North America typically uses different paper sizes such as Letter or Legal.

9. Expansion of DIN 476 Series: The introduction of SRA3 expanded the DIN 476 series, which includes various paper sizes designed to maintain consistent proportions and facilitate efficient printing processes.

10. Versatility in Printing Applications: SRA3 paper can be used for a wide range of printing applications, including commercial printing, packaging, stationery, and even art prints due to its larger format options.