Approximate ball height for a 2018 ml2057s

[Swa1]

Looking to see if anyone knows the hitch ball height on a 2018 ml 2507s. We pick ours up on Tuesday and don't feel like taking tools to set the ball height on the hitch. I know that every trailer is different just trying to get close and adjust it when i get back home. Thanks

[SeaDog]

Don't have that rigs info, but 20" is a good start, if you are not towing very far.