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