The IAB that's the Interactive Advertising Bureau recommends four sizes in their Universal Ad Package, and this is one of them. At 300 by 250 pixels, our Business Medium Rectangle Banner Template is one of the most versatile ad formats around, and for good reason. It's easy to include in-line with text in news articles, web pages, and other online communications. With this banner ad in your arsenal, your advertising campaign will have great reach and frequency with your target market.