42" by any size (Example Sizes: 30x42, 42x42, 42x56, 42x84, etc.) Most conferences and poster sessions have poster measurement requirements, so double check that your poster's PowerPoint slide is the ...

Recommended size for posters are maximum size 0.9m x 0.6m ... According to the City of Johannesburg’s Outdoor Advertising by-law, 2017, a poster about a candidate running for an election ...