From Wkipedia. Geuss i should have googled before asking. I thought city names described sizes and orientation, but sounds like its just orientation. Disapointing.
""Often when a Grip is placing an Apple Box others are lifting something heavy to put on top of it, thus arose the need for terms describing what position the Apple Box should be placed in (i.e. which side of the Apple Box should be placed face-down). It is rare that these terms are used for anything other than the "Full Apple" size.
LA: Positioned so the Apple Box is resting on its largest side. 8" tall for a full apple.
New York: Positioned so the Apple Box is tallest, 20" high.
Texas/Chicago: Positioned so the Apple Box is on its longest narrow side, 12" high.""