Central element with an adjustment knob for speed controller, Berker Q.1/Q.3/Q.7 series, with the following features:
< ul>| Une sorte de paquet | Karton | Pakiet | Paleta |
| Quantité | 10 pcs. | 200 pcs. | 6400 pcs. |
| poids (kg) | 0,240 | 4,800 | 153,600 |
| Largeur (m) | 0,070 | 0,300 | 0,800 |
| Longueur (m) | 0,060 | 0,220 | 1,050 |
| Profondeur (m) | 0,170 | 0,400 | 1,200 |