Banner Standards

	Weight	Length
300 x 250 IMU - (Medium Rectangle)	40k	:15
180 x 150 IMU - (Rectangle)	40k	:15
728 x 90 IMU - (Leaderboard)	40k	:15
160 x 600 IMU - (Wide Skyscraper)	40k	:15
300 x 600 IMU - (Half Page Ad)	40k	:15
120 x 60 IMU - (Button 2)	20k	:15
88 x 31 IMU - (Micro Bar)	10k	:15

Core Standard Ad Units

By IAB, as of February 28, 2011
The Interactive Advertising Bureau (IAB) is comprised of more than 500 leading media and technology companies who are responsible for selling majority of online advertising. The IAB defines commonly used standards and best practices for online advertisement.

• Those sizes that are bold are part of the Universal Ad Package
• IMU - Interactive Marketing Unit
• Weight - Recommended Maximum Initial Download Fileweight
• Length - Recommended Animation Length (Seconds)
• :15 animation includes multiple loops

IAB Leaderboard (728 x 90)

IAB Wide Skyscraper
(160 x 600)

IAB Medium Rectangle
(300 x 250)

IAB Rectangle
(180 x 150)

IAB Button 2
(120 x 60)

IAB Micro Bar
(88 x 31)

Delisted Standard Ad Units

By IAB, as of February 28, 2011
These ad units have been retired as they are no longer commonly bought and offered throughout the market. This was designated to be a requirement defined by the "Ad Unit Guidelines Update" developed by the Reimagining Interactive Advertising Task Force in November 2009. But some of retired units are still available, as well as custom and special dimensions.

IAB Skyscraper
(120 x 600)