RA3

The RA3 paper size is one of the smaller formats in the ISO 217 series of raw, untrimmed paper sizes. It measures 305 mm x 430 mm, giving it a surface area of approximately 0.131 square meters. The RA designation refers to 'raw format A', meaning it is oversized from the A series to enable bleed printing. RA3 is slightly larger than the popular A3 size which is 297 mm x 420 mm. While one of the smaller RAs, RA3 still sees regular use for printing jobs requiring bleed allowance on oversized sheets. Typical applications include brochures, catalogs, magazines, presentation handouts, and promotional materials. After printing, RA3 sheets are typically trimmed down to A3 for binding or use. The efficient 1:√2 aspect ratio allows easy printing of 4 pages on a single RA3 sheet. RA3 originated from the ISO 217 standard finalized in 1975 that established standard untrimmed paper formats. In summary, RA3 serves as a versatile raw sheet size for smaller print projects needing the oversized capacity for bleed printing.