SRA2

The SRA2 paper size is one of the middle formats in the ISO 217 series of supplementary raw, untrimmed paper sizes. It measures 450 mm x 640 mm, giving it a surface area of approximately 0.288 square meters. The SRA designation refers to 'supplementary raw format A', meaning it is oversized from the standard A2 dimensions of 420 mm x 594 mm. The generous size of SRA2 makes it useful for printing projects needing substantial bleed allowance. Typical applications include oversized posters, large folding maps, artistic prints, and educational materials. After printing, SRA2 sheets are often trimmed down to A2 size for binding or use. The convenient 1:√2 aspect ratio enables efficiently printing 2 pages on a single SRA2 sheet. As part of the ISO 217 standard in 1975, SRA2 was established as a supplementary untrimmed format. In summary, at 450 x 640 mm, SRA2 provides an oversized raw sheet for printing jobs that require generous bleed capacity.