SRA3 is an ISO paper sheet size which is 320mm x 450mm in dimensions.
Sra3 320 x 450mm , for printing A3 with bleed
SRA3 paper measures 320 mm x 450 mm (12.6 in x 17.7 in). It is primarily used in the printing industry for producing larger formats, allowing for bleed and trimming of artwork. This size is often utilized in commercial printing, posters, and other high-quality print materials.