This is an amazing coincidence! I bought the same one and I literally just finished setting it up. If you don't mind the question, how thick is your door frame

This is an amazing coincidence! I bought the same one and I literally just finished setting it up. If you don't mind the question, how thick is your door frame? I feel like the bar tends to slide down / put pressure downwards on the wooden frame and I'm reluctant to hang on it for fear of breaking it, not sure if it's how it's supposed to work.