Strum box (square)
(by Victory Technical Pte. Ltd.)
| Size | H(mm) | A(mm) | D(mm) |
| DN50 | 80 | 110 | 65 |
| DN65 | 100 | 140 | 80 |
| DN80 | 110 | 170 | 94 |
| DN100 | 140 | 200 | 120 |
| DN125 | 170 | 260 | 145 |
| DN150 | 200 | 320 | 172 |
| DN200 | 260 | 380 | 224 |
Strum box (round)
(by Victory Technical Pte. Ltd.)
| Size | H(mm) | H1(mm) | OD(mm) | ID(mm) |
| DN50 | 80 | 102 | 110 | 60 |
| DN65 | 100 | 122 | 140 | 73 |
| DN80 | 110 | 132 | 170 | 89 |
| DN100 | 140 | 162 | 200 | 114 |
| DN125 | 170 | 192 | 260 | 141 |
| DN150 | 200 | 222 | 320 | 168 |
| DN200 | 260 | 290 | 380 | 219 |