I believe you are referring to RadCoverFlow online examples, displaying a rounded border with an image inside. Some of the examples use an ItemContainerStyle
to style RadCoverFlowItems. So it is perfectly possible to set any desired size in that style.
Other examples use a separate UserControl for presenting the item. Again, you can simply edit that UserControl and update sizes as you need.
I hope this helps.
the Telerik team
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