B2+ paper is a larger size in the B series paper sizes, which are used primarily in Europe and Asia. This size is not included in the ISO 216 standard, but is often used in the printing industry for printing posters, charts, and other large-format documents. The dimensions of B2+ paper are 530mm x 760mm, which is slightly larger than B2 paper, but smaller than A1 paper.
B2+ paper is often used for printing large posters and other graphics, as its size allows for plenty of space to display images and text. Its slightly larger size compared to B2 paper means that it can be used for more complex designs that require more space. The B2+ size is also a popular choice for printing architectural plans and engineering drawings.
Because B2+ paper is not included in the ISO 216 standard, it is not as widely used as other paper sizes. However, it is still a useful size for many printing projects, particularly those that require a larger format than B2 paper can provide. It is important to note that B2+ paper may not be readily available at all print shops and paper suppliers, so it may be necessary to source it from a specialized supplier or order it online.