SSDFD-155 Type CR, CO, C, & R
The following chart show minimum and maximum damper size.
Dimensions are in inches (mm in parentheses).
O*
H*
Type C
W*+2
W*
O*
H*
Type CO
W*+2
W*
D*
Type CR
O*
D*+2
Copyright © 2006 Greenheck Fan Corporation
SSDFD-155 Rev. 2 July 2006
Overall Damper Dimensions
2 Multi-Section Limitations
Maximum damper height is 44" when combination width is 94" or less .
Maximum Single Section
Dimensions
Multi-Section Limitations
Maximum transition height is 36" when transition width is gr eater than 94" and less than or equal to 118".
3
T ype CO
T ype C
36”
Max.
118”
Max.
118”
Max.
36”
Max.
94” Max.
or 72” Max.
25 in. (635mm)
Max.
25 in. (635mm)
Max.
28 in.
(711mm)
Max.
28 in.
(711mm)
Max.
Multi-Section Limitations
Maximum damper height is 69" when combination width is 72" or less . (V ertical mullion pr ovided on dampers over 34”
wide and 44” high. )
44” Max.
or 69” Max.
94” Max.
or 72” Max.
44” Max.
or 69” Max.
4
2
4
2
4
2
4
2
4
Reinfor cement
Rods
25 in.
(635mm)
Max.
29 in.
(737mm) max.
inches (mm)
Type CR
Type CO & C
Type R*1
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Single section
Vertical
3
(76)
25
(635)
3 x 3
(76 x 76)
28 x 25
(711 x 635)
3
(76)
29
(737)
C, CO, CR transitions
are positioned 1
in.(25mm) from bottom
of sleeve.
*1 With 2 in. (50mm) offset. Sizes adjust with 0 offset & 1 in. (25mm) offset.
Size Limitations
Type CR
Type R
Type R transition is centered on damper
frame. Dimensions are with 2 in. (50mm)
offset.
H* or D*
O*
3 (76)
6 (152)
4 (102)
7 (178)
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)
* Dimensions are in inches (mm). These
dimensions are furnished approximately
1/4 in. (6mm) undersize.
