Measuring at 300x250 pixels, the Medium Rectangle ad gains a lot of coverage across KNDU/KNDO.com. It is a standard size used and offered by most ad servers and companies.
The size allows for large logos and images and can contain a lot of information.
With this ad placement, you can expect:
Rotation on Category Pages
Rotation on Story Pages
50/50 Rotation with National Ads
This ad unit is located in two areas on both story and category pages. The first placement is in the right hand column above the fold. The second placement is on the left hand side closer to the bottom of the page. Your ad will get equal rotation through both placements. You do not have to worry about your ad appear more often in one placement over the other.