Anyone know the radius of Ekko's W?

I hope this is in the right place. It kinda has to do with gameplay? Wish there was a place just titled "Champion questions" or something, but anyways.....

Does anyone know the radius of Ekko's W? I know it's cast radius (1600), but not the actual radius of the skill itself. I ask because I am comparing a few things and trying to give an accurate representation.

Is it 400? 500 unit radius? Anyone who knows please let me know.

And before you ask or say....I have googled it. No one says anything that I found. Just stating the CAST radius. Not the skill itself. Even on the wiki for the champions it doesn't say. :\

Thank you. ^_^