How can I find the HEIGHT of a decal when the selection is only by WIDTH – or – how can I find the WIDTH of a decal when the selection is only by HEIGHT?

When you select an decal and choose a size (which is either showing as (W)idth or (H)eight), the other dimension now shows an approximate size in the product details. Simply select the size you are interested in and the the other dimension will be shown below the size selection.