| Hole Type | Standard Size | Core Application |
| Web Slotted Hole | 9×30mm | For M8 spring channel nut & bolt, lateral connection of support |
| Web Slotted Hole | 11×30mm | For M10 spring channel nut & bolt, main beam/upright connection |
| Web Slotted Hole | 13.5×30mm | For M12 bolt, heavy-load upright connection |
| Flange Round Hole | Φ8.5mm | U-bolt & fitting fixing, longitudinal reinforcement of bracket |
| Flange Round Hole | Φ10.5mm | M10 bolt fixing, diagonal brace & tie rod connection |
| Flange Round Hole | Φ12.5mm | M12 bolt fixing, heavy-duty base connection |