DFD-150X Type A
Dampers larger than maximum single section size are supplied in 2 or more sections of equal size.
The following chart and illustrations show minimum and maximum damper section size and assembly configurations for
SIZE LIMITATIONS
Inches | Type A |
| Type B |
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(mm) | minimum | maximum | minimum | maximum | |||
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Single | 6 x 4 | 36 x | 36 | 6 x 6 | 36 x | 32 | |
Section | |||||||
(152 x 102) | (914 x | 914) | (152 x 152) | (914 x | 813) | ||
Vertical | |||||||
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| 72 x | 48 |
| 72 x | 45 | |
Multi |
| (1829 x | 1219) |
| (1829 x | 1143) | |
Section** | NA | or |
| NA | or |
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Vertical |
| 60 x | 60 |
| 60 x | 56 | |
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| (1824 x | 1524) |
| (1524 x | 1422) | |
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Single | 6 x 4 | 30 x | 30 | 6 x 6 | 30 x | 26 | |
Section | |||||||
(152 x 102) | (762 x | 762) | (152 x 152) | (762 x | 660) | ||
Horizontal | |||||||
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Multi |
| 48 x | 36 |
| 48 x | 32 | |
Section** | NA | NA | |||||
(1219 x 914) | (1219 x 813) | ||||||
Horizontal |
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Installation of sizes larger than the maximums shown requires approval of the authority having jurisdiction.
**Consult factory for number of sections.
1Maximum Single Section Dimensions
36in. max. (914mm)
36 in. max. (914mm)
2Multi-section limitations
Maximum height is 48 in. (1219mm) when width is 72 in. (1829mm) or less.
48 in. (1219mm) max.
H*
W*
| H* |
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in. | mm | in. |
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8 | 203 | 1.2 |
| 30 |
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9 | 229 | 1.3 |
| 33 |
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10 | 254 | 1.3 |
| 33 |
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11 | 279 | 1.4 |
| 36 |
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12 | 305 | 1.6 |
| 41 |
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13 | 330 | 1.7 |
| 43 |
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14 | 356 | 1.8 |
| 46 |
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15 | 381 | 1.8 |
| 46 |
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16 | 406 | 2.0 |
| 51 |
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17 | 432 | 2.1 |
| 53 |
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18 | 457 | 2.2 |
| 56 |
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19/37/38 | 483/940/965 | 2.3 |
| 58 |
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20/39/40 | 508/991/1016 | 2.4 |
| 61 |
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21/41/42 | 533/1041/1067 | 2.6 |
| 66 |
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22/43/44 | 559/1092/1118 | 2.6 |
| 66 |
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23/45/46 | 584/1143/1168 | 2.7 |
| 69 |
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24/47/48 | 610/1194/1219 | 2.9 |
| 74 |
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25/49/50 | 635/1245/1270 | 3.1 |
| 79 |
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26/51/52 | 660/1295/1321 | 3.2 |
| 81 |
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27/53/54 | 686/1346/1372 | 3.2 |
| 81 |
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28/55/56 | 711/1397/1422 | 3.3 |
| 84 |
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29/57/58 | 737/1448/1473 | 3.4 |
| 86 |
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30/59/60 | 762/1499/1524 | 3.6 |
| 91 |
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31/32 | 787/813 | 3.7 |
| 94 |
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33/34 | 838/864 | 3.9 |
| 99 |
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35 | 889 | 4.1 |
| 104 |
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36 | 914 | 4.2 |
| 107 |
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*These dimensions are furnished approximately 1/4 in. (6mm) undersize.
72 in. (1829mm) max.
