AbleFitness Heavy Duty Doorway Chin up Pull up Bar, 330 lb 12 grip positions to develop your shoulders, back, arms, abs, and much more Heavy-gauge steel construction and tested to work perfectly up to 300 lbs Fits doorways up to 36" wide (sturdy doorframe with trim required-minimum 5" width, maximum 6.5") Remove the chin up bar from your door way in seconds when not in use Single main bar design. Most chin up bars in the market now have the main bar cut into multiple pieces and stuffed into a small box for shipping. This creates extra assembly work and multiple weak points on the bar.