3 Series

3 Series Rigs & Racks

Designed in Belfast, the 3 Series has a rapid lead time and is easy to install, built to the same BLK BOX quality standard as the rest of the range. Made from 70x70x3mm steel, it features 4-way numbered hole spacing for precise adjustments, making it straightforward to integrate a wide range of attachments. Whether for an independent gym owner or a high-performance facility, this rack offers durability and adaptability at a mid-tier price point.

The 3 Series is built to evolve: its modular design is intended to grow alongside a facility rather than be replaced as training needs change, making it a scalable option for gyms expecting to expand their equipment over time. This sits between BLK BOX's two other off-the-shelf ranges - a step up in steel gauge and hole spacing precision from the entry-level build, without the price point of the commercial-grade range used by elite facilities.

Available as full rigs, half racks, and Nexus functional trainer configurations, the 3 Series can be specified to match the exact footprint and training style a facility needs.

For a lighter, more budget-focused option, see the 1 Series. For the heavy-duty, commercial-grade build used by elite facilities, see the 5 Series.