Interstitial 970(w) x 450(h) pixels

Specifications:
Dimensions: 750(w) x 450(h) pixels
File size: 100KB
Type: GIF / JPEG / HTML5 (Must be 3rd party served)
Website: Landing page from the banner
Recommendation: Desktop/Tablet 50kB Web 2.0 allows for a more engaging user experience, without slowing down the Publisher page load.