Dimensional drawings
FB Type Flange duct size
| Form | A | B | E | I | F | G | K | M | N | L | T |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OK | 37 | 27 | 30 | 43 | 52 | 67 | 7Ø | 27 | 17 | 30 | 2.0 |
| OK-1 | 67 | 32 | 60 | 48 | 62 | 97 | 7Ø | 57 | 22 | 35 | 2.0 |
| 1K | 57 | 37 | 50 | 53 | 67 | 87 | 7Ø | 47 | 27 | 35 | 2.0 |
| 1K-1 | 54 | 54 | 60 | 60 | 80 | 80 | 7Ø | 47 | 47 | 35 | 2.0 |
| 2K | 92 | 52 | 80 | 71 | 91 | 121 | 10Ø | 81 | 41 | 60 | 2.0 |
| 2K-1 | 102 | 57 | 90 | 76 | 96 | 131 | 10Ø | 91 | 46 | 60 | 2.0 |
| 2K-2 | 92 | 67 | 80 | 85 | 105 | 121 | 10Ø | 81 | 59 | 60 | 2.0 |
| 3K | 122 | 67 | 110 | 85 | 105 | 150 | 10Ø | 110 | 55 | 60 | 3.0 |
| 4K | 122 | 87 | 110 | 105 | 125 | 150 | 10Ø | 110 | 75 | 60 | 3.0 |
| 4K-1 | 179 | 89 | 165 | 110 | 130 | 215 | 10Ø | 165 | 75 | 70 | 3.0 |
| 5K | 149 | 99 | 130 | 120 | 140 | 175 | 10Ø | 135 | 85 | 70 | 3.0 |
| 5K-1 | 179 | 104 | 165 | 125 | 145 | 215 | 10Ø | 165 | 90 | 70 | 3.0 |
| 6K | 184 | 119 | 170 | 140 | 160 | 220 | 10Ø | 170 | 105 | 80 | 3.0 |
| 7K | 212 | 112 | 197 | 130 | 152 | 247 | 10Ø | 197 | 97 | 80 | 3.0 |
| 8K | 232 | 112 | 217 | 140 | 162 | 267 | 10Ø | 217 | 107 | 80 | 3.0 |
