This was taken 07/06/19 in Cape Breton, NS, Canada.
I would say that it is about an inch (2.5 cm) in length and seemed to be pretty uniformly grey. The belly was the same colour as the legs, it had a few small brown spots but I couldn't tell if that was an actual marking or maybe just environmental.
It was just hanging out right beside the handle of the door exactly where you don't want a spider to be.
In usual spider fashion it has dipped and is now...somewhere :(