Below are the surface area and lifting power ratings for AMK model R-36 and wider widths:
| Magnet | Surface | Lifting |
| Width | Area | Power |
| 36” | 180 sq in | 200 |
| 48” | 240 sq in | 275 |
| 60” | 300 sq in | 325 |
| 72” | 360 sq in | 400 |
| 84” | 420 sq in | 450 |
As measured with pounds of a solid steel bar.