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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.