A1+ paper size is a paper size that is slightly larger than the standard A1 size. It measures 609 x 914 mm (24 x 36 inches), compared to the A1 size which measures 594 x 841 mm (23.4 x 33.1 inches).
A1+ paper size is commonly used in the printing industry for posters, banners, and other large format graphics. Its larger size compared to A1 paper makes it a popular choice for printing oversized images or designs that need to be viewed from a distance, such as advertisements, trade show graphics, and movie posters.
Like other ISO paper sizes, A1+ paper has a 1:√2 aspect ratio, which means that it can be easily scaled up or down to create other ISO paper sizes. It is also commonly used for architectural and engineering drawings, as well as for printing technical drawings and plans.
When printing on A1+ paper, it is important to use a high-quality printer capable of producing high-resolution images and crisp, clear text. Most professional print shops and copy centers will have the equipment necessary to print on A1+ paper, and can provide guidance on how to prepare files for printing.
Overall, A1+ paper size is a versatile and popular paper size that is used in a variety of industries for printing large format graphics, posters, and technical drawings. Its larger size compared to A1 paper makes it an ideal choice for creating oversized prints that need to be viewed from a distance.