Tube and Ball Upright
By Huu Khanh Nguyen · Updated October 29, 2026 · usm, haller, tube, ball, upright, shelf-frame, shelving
A thin steel tube with a chrome ball at each end; four of them with cross tubes make the frame of a modular shelf, desk or cabinet.
Parameters
| Name | Default | Unit |
|---|---|---|
| Ball diameter | 2 * ballRadius | mm |
| Depth | 2 * ballRadius | mm |
| Height | centres + 2 * ballRadius | mm |
| Centre distance | 350 | mm |
| Ball radius | 11.5 | mm |
| Tube radius | 9.5 | mm |
| Finish | white |