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Why Steel Size Matters in Power Racks: A Breakdown of 60mm vs. 70mm vs. 80mm Frames

BLK BOX Stainless Steel Nexus Compact Rack

When investing in a power rack or gym rig, one of the most overlooked but critical factors is the size of the steel used in its construction. The thickness and dimensions of the steel frame directly impact durability, stability, and overall performance.

Understanding Steel Size in Power Racks

BLK BOX offers three primary steel profiles across its power racks and rigs:

  • 60x60x3mm Steel (1 Series): Compact and efficient, designed for home gyms and personal training studios.
  • 70x70x3mm Steel (3 Series): A balance of durability and modularity, ideal for growing commercial gyms.
  • 80x80x3mm Steel (5 Series): Built for elite performance and heavy-duty strength training environments.

Comparing 60mm vs. 70mm vs. 80mm Steel Frames

1. Durability and Load Capacity

The thicker and wider the steel, the more weight a rack can handle. The 5 Series (80x80mm) provides the highest durability, making it the preferred choice for elite training centres.

2. Stability and Safety

Larger steel profiles reduce flex and movement during heavy lifts. The 3 Series and 5 Series offer enhanced stability compared to the lighter 1 Series.

3. Space and Versatility

While the 80x80mm frame is the most robust, the 60x60mm frame is compact and space-efficient, making it ideal for smaller gym environments.

Choosing the Right Steel Size for Your Gym

  • For home gyms and PT studios: 60x60mm (1 Series) offers reliability in a compact footprint.
  • For commercial gyms and functional fitness: 70x70mm (3 Series) balances strength and expandability.
  • For elite performance and professional athletes: 80x80mm (5 Series) provides maximum durability.

Final Thoughts

Understanding steel size ensures you choose a power rack or rig that meets your strength training needs. Whether you're building a home gym or equipping a professional facility, BLK BOX has a steel profile designed to support your goals.

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