As indicated in the title, the article of manufacture to which the design has been applied is an exercise rack. Examples of an exercise rack are a dumbbell rack, a barbell rack, a combination rack and exercise machine such as a squat rack and exercise machine, a pull-up rack and exercise machine, and/or the like.
The broken lines showing the remainder of the exercise rack are directed to environment. None of the broken lines form a part of the claimed design.