Pull-up Doorway Bar HMS DD300 with Triple Support — Tension-Mounted Chin-Up Bar

The HMS DD300 tension-mounted pull-up bar is designed for doorway installation without the need for permanent fixtures. Built for chin-ups, pull-ups and hanging exercises, the bar uses a triple support system to increase stability while remaining removable and compact. It fits standard door openings and is intended for home strength training where space and ease of installation are priorities.

Advantages

The triple support design reduces lateral movement and improves load distribution across the doorframe, providing a more stable exercise surface compared with simple single-point tension bars. Its tension-mounted installation eliminates drilling or permanent fittings, allowing easy removal and reinstallation. The bar’s compact construction makes it suitable for small spaces and for users who need a portable solution for upper-body workouts.

Suitable for

• Chin-ups and pull-ups
• Hanging knee raises and leg raises
• Grip and forearm strength exercises
• Home bodyweight training sessions

Key specifications

• Mounting type: tension-mounted for doorframe installation
• Support system: triple support for increased stability
• Primary use: upper-body and hanging exercises (chin-ups, pull-ups)
• Design: compact and removable for easy storage
• Compatibility: fits standard door openings

How to use

Assemble and adjust the tension mechanism according to the doorframe width, position the bar at the desired height above the floor and secure it until resistance indicates a firm fit. Before each use, verify that the bar is tightly tensioned and that supports contact the frame evenly. Use controlled movements for chin-ups, pull-ups and hanging exercises, and avoid sudden jerks or dynamic swings that could reduce stability. After use, release tension and remove the bar for storage if permanent installation is not required.

Usage recommendations

Check the doorframe condition before installation; ensure the frame is solid and free of damage. Observe the manufacturer’s maximum user weight guidelines where provided, perform a brief load test before full use, and maintain the unit by keeping contact surfaces clean and free of debris.