Greenheck DFD-150X series Specification Sheet page 4

DFD-150X Types CR, CO & C
DFD-150X dampers with C, CO, CR, and R transitions are available only as single section dampers.
The following chart show minimum and maximum damper size. Dimensions are in inches (mm in parentheses).
Type CR
inches (mm)
Minimum Maximum
Single Section 6
Vertical (152) (787)
Single Section 6
Horizontal
(152) (787)
*1 With 2 in. (50mm) offset. Sizes adjust with 1 in.(25mm) offset.
C, CO, CR transitions are
Type R
34 in. (787mm) max.
Type C
31 in. (787mm)
Max
34 in. (864mm)
Max
Steel Stud Connection (SSC) Option
The Steel Stud Connection (SSC) Option allows fastening of the damper sleeve (up
to 36 in. W x 36 in. H [914mm x 914m]) directly to the wall's steel stud framing. This
option replaces the angles that were previously required for wall installations.
Steel Stud
Frame
Steel Stud Wall
Steel Stud Frame
Type CO & C
Minimum Maximum
31 6 x 5 34 x 31
(152 x 127) (864 x 787)
31 6 x 5 34 X 31
(152 x 127) (864 X 787)
positioned 1 in. (25mm)
from bottom of sleeve.
Type CR
31in. (787mm) max.
Type CO
31 in. (787mm)
Max
34 in. (864mm)
Max
Wallboard
Type R* 1
Minimum Maximum
6 34
(152) (864)
6 34
(152) (864)
Steel Stud
Frame
Steel Stud Wall
Wallboard
Steel Stud Frame
Retaining Bar
Damper
Sleeve
Cross-Section A-A
D*+2
T ype CR
D*
W*+2
T ype CO
H*
W*
W*+2
T ype C
H*
W*
H or D* O*
5 (127) 8 (203)
6 (152) 9 (229)
7 (178) 10 (254)
8 (203) 11 (279)
9 (229) 12 (305)
10 (254) 13 (330)
11 (279) 14 (356)
12 (305) 15 (381)
13 (330) 16 (406)
14 (356) 17 (432)
15 (381) 19 (483)
16 (406) 20 (508)
17 (432) 21 (533)
18 (457) 22 (559)
19 (483) 23 (584)
20 (508) 24 (610)
21 (533) 25 (635)
22 (559) 27 (686)
23 (584) 28 (711)
24 (610) 29 (737)
25 (635) 30 (762)
26 (660) 31 (787)
27 (686) 32 (813)
28 (711) 33 (838)
29 (737) 34 (894)
30 (762) 35 (889)
31 (787) 36 (914)
* Dimension are in inches (mm). These dimensions are
furnished approximately 1/4 in. (6mm) undersize.
Copyright © 2008 Greenheck Fan Corporation
DFD-150X series Rev. 13 July 2008
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