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  HEAVY DUTY CONTROL DAMPERS   Quick Reference Chart
Damper
Model
Standard
Construction
Description
 
Applications
Damper
Width
in. & (mm)
(Single Sections)*
Max.
System
Pressure
(in. w.g./Kpa)
Max.
System
Velocity
(FPM/M/S)
Leakage
With/Without
Seals
(CFM/SQ.FT.)
Temp.
Range
°F and (°C)**
CD80AF4
Galvanized construction
  Fan Discharge

Isolation

Stack Isolation
60"

48"


36"


24"


12"
(1524)

(1219)

(914)

(610)

(310)
20.00/5.0

26.00/6.5

32.00/8.0

35.00/9.0

44.00/11.0
5000/25.4

5000/25.4

5000/25.4

6000/30.4

6000/30.4
4.0 

4.0 

4.0 

8.0 

13.0 
 32

 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
Welded 12 ga. up to 48" wide, 10 ga. 48" to 60" airfoil blade
3/4" axles up 48" blade width, 1" axle 48" to 60"
8" x 2" x 10 ga. channel flange frame
Stainless steel sleeve bearing bolted to frame
CD80AF3
Galvanized construction
  High Pressure

Thermal Oxidzer Fans

Fan Intake
60"

48"


36"


24"


12"
(1524)

(1219)


(914)


(610)

(305)
14.00/3.5

19.00/4.7

24.00/6.0

29.00/7.2

34.00/8.5
5000/25.4

5000/25.4

5000/25.4

6000/30.4

6000/30.4
4.0 

4.0 

4.0 

8.0 

13.0 
 32

 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
Welded 16 ga. up to 48" wide, 14 ga. 48" to 60" airfoil blade
3/4" axles
Stainless steel sleeve bearing bolted to frame
8" x 2" x 12 ga. flange frame
CD80AF2
8" x 2" x 14 ga. galvanized channel frame
  Paint Ovens

Heat Recovery

Air Handler Intake
60"

48"

36"

24"

12"
(1524)

(1219)

(914)

(610)

(305)
12.00/3.0

17.00/4.2

22.00/5.5

27.00/6.7

32.00/8.0
4000/20.3

4000/20.3

4000/20.3

5000/25.4

6000/30.4
4.0 

4.0 

4.0 

8.0 

13.0 
 32

 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
3/4" plated axles
Stainless steel press fit bearings
10 ga. galvanized steel clevis side linkage
Max single section 60" w x 96" h
CD80AF1
8" x 2" x 14 ga. galvanized channel frame
  Face and Bypass

Low Pressure

Light Industrial
48"

36"

24"

12"
(1219)

(914)

(610)

(305)
10.00/2.5

14.80/3.7

19.30/4.8

24.00/6.0
4000/20.3

4000/20.3

5000/25.4

6000/30.4
4.0 

4.0 

8.0 

13.0 
 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
1/2" plated axles
Stainless steel press fit bearings
10 ga. galvanized steel clevis side linkage
Max single section 48" w x 96" h
CD80VG2
8" x 2" x 14 ga. galvanized channel frame
  Air Handler Intake

Drying Processes

Balancing
48"

36"

24"

12"
(1219)

(914)

(610)

(305)
6.75/1.7

9.00/2.2

15.50/3.8

20.00/5.0
2000/10.1

2000/10.1

2000/10.1

2000/10.1
8.0 

8.0 

10.0 

15.0 
 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
3/4" plated axles
16 ga. triple vee groove galvanized blades
Concealed side linkage
Stainless steel press fit bearings
CD80VG1
8" x 2" x 14 ga. galvanized channel frame
  Light Duty Ventilation

Fresh Air Intake

Damper Louver

Combinations
48"

36"

24"

12"
(1219)

(914)

(610)

(305)
2.50/.62

3.75/.93

6.00/1.5

8.25/2.05
2000/10.1

2000/10.1

2000/10.1

2000/10.1
8.0 

8.0 

10.0 

15.0 

 32

 32

 40

 60

250°F
to 400°F

(121°C
to 204°C)
1/2" plated axles
16 ga. triple vee groove galvanized blades
Concealed side linkage
Stainless steel press fit bearings
CD80VGX
8" x 2" x 14 ga. galvanized channel frame
  Economically Priced

Express Delivery

Fan Discharge
48"

36"

24"

12"
(1219)

(914)

(610)

(305)
6.75/1.7

9.00/2.2

15.50/3.8

20.00/5.0
2000/10.1

2000/10.1

2000/10.1

2000/10.1
— 

— 

— 

— 
 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
3/4" 90° crank arm
16 ga. vee groove blades
Stainless steel press fit bearings
Max single section 48" w x 96" h
CD/OD102
10" x 2" x 12 ga. steel channel frame
  Aluminum Construction

Fan Intake and Discharge

Clean Room Applications
60"

48"

36"

24"

12"
(1524)

(1219)

(914)

(610)

(305)
8.00/2.0

12.00/3.0

16.00/4.0

20.00/5.0

24.00/6.0
4000/20.3

4000/20.3

4000/20.3

5000/25.4

5000/25.4
6.7 

8.0 

8.0 

10.0 

15.0 
 32

 32

 32

 40

 60
300°F

(149°C)
6063T5 extruded aluminum airfoil blade
10 ga. galvanized clevis arm linkage
Stainless steel press fit bearings
Max single section 60" w x 96" h
CD30AF2
3" x 1" x 12 ga. frame
  Air Handler Intake

InductMounting

Low Pressure Drop
60"

48"

36"

24"

12"
(1524)

(1219)

(914)

(610)

(305)
12.00/3.0

17.00/4.2

22.00/5.5

27.00/6.7

32.00/8.0
4000/20.3

4000/20.3

4000/20.3

5000/25.4

6000/30.4
4.0 

4.0 

4.0 

8.0 

13.0 

 32

 32

 32

 40

 60

250°F
to 400°F

(121°C
to 204°C)

In air stream mounted linkage
3/4" axles
16 ga. air foil blades
In duct mounting design
CD30AF1
3" x 1" x 12 ga. frame
  Ultra Low Leakage Options

Clean Rooms

Hospitals
48"

36"

24"

12"
(1219)

(914)

(610)

(305)
10.00/2.5

14.80/3.7

19.30/4.8

24.00/6.0
4000/20.3

4000/20.3

5000/25.4

6000/30.4
4.0 

4.0 

8.0 

13.0 
 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
In air stream mounted linkage
1/2" axles
16 ga. air foil blades
Max single section 48" w x 96" h
TD30AF2
12 ga. flanged channel frame
  Fire Rated Tunnel Damper

Cycle Tested

Track Isolation
60"

48"

36"

24"

12"
(1524)

(1219)

(914)

(610)

(305)
12.00/3.00

17.00/4.20

22.00/5.50

27.00/6.70

32.00/8.00
4000/20.3

4000/20.3

4000/20.3

4000/20.3

4000/20.3
4.0 

4.0 

4.0 

8.0 

12.0 
 —

 —

 —

 —

 —
482°F

(250°C
2 Hour)


Qualified to BS 476 pt. 20 2 Hour
Airfoil 14 ga. galvanized blades
3/4" full length stainless steel axles
Stainless steel blade seals
BS476 pt. 20 approved
CD82HT
8" x 2" x 3/16" steel channel frame
  High Temperature Ovens

Foundry

Dryer Fans
60"

(1524)

13.00/3.2 2000/10.1 -  32 750°F

(399°C)
1/4" blades
48"
(1219) 15.00/3.7 2500/12.7 - 32
Cast iron sleeve bearings bolted to frame
36"
(914) 17.00/4.2 3000/15.2 - 32
1" diameter axles
24"
(610) 19.00/4.7 3500/17.7 - 40
750°F service
12"
(305) 21.00/5.2 4000/20.3 - 60
CD30VG2
3" x 1" x 12 ga. frame
  Manufacturing Plants

Balancing

Face and Bypass
48"

36"

24"

12"
(1219)

(914)

(610)

(305)

6.75/1.7

11.00/2.7

15.50/3.8

20.00/5.0

3500/17.7

3500/17.7

3500/17.7

3500/17.7
8.0 

8.0 

10.0 

15.0 
 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
In air stream mounted linkage
3/4" axles
16 ga. galvanized vee groove blades
Stainless steel press fit bearings
CD30VG1
3" x 1" x 12 ga. frame
  Fresh Air Intake

Gymnasiums

Food Processing
48"

36"

24"

12"
(1219)

(914)

(610)

(305)
2.75/.68

3.75/.93

6.00/1.5

8.25/2.05
3000/15.2

3000/15.2

3000/15.2

3000/15.2
8.0 

8.0 

10.0 

15.0 
 32

 32

 40

 60
250°F
to 400°F

(121°C
to 204°C)
In air stream mounted linkage
1/2" axles
16 ga. galvanized vee groove blades
Stainless steel press fit bearings
CDRI92
Round channel flange frame (10 ga. to 5/16")
  Round Duct Isolation

Gas Vapor Isolation

Bio-Labs
72"

60"

48"

36"

24"

12"
(1829)

(1524)

(1219)

(914)

(610)

(305)
15.00/3.7

15.00/3.7

15.00/3.7

16.00/3.9

17.00/4.2

20.00/5.0
7000/35.5

7000/35.5

7000/35.5

7000/35.5

7000/35.5

7000/35.5
2.3 

1.9 

1.5 

1.1 

0.8 

0.4 
 —

 —

 —

 —

 —

 —
250°F

(121°C)
Steel blade with stiffeners (when required)
Adjustable full circumference blade seal
Full length solid steel axle
Shaft seals with outboard mounted ball bearings
CDR92
Round channel flange frame (10 ga. to 1/4")
  Balancing

Fume Extraction

Process Piping
72"

60"

48"

36"

24"

12"
(1829)

(1524)

(1219)

(914)

(610)

(305)
13.00/3.2

13.00/3.2

13.00/3.2

14.00/3.5

15.00/3.7

17.00/4.2
6000/30.4

6000/30.4

6000/30.4

6000/30.4

6000/30.4

6000/30.4
60.0 Total 

45.0 Total 

35.0 Total 

28.0 Total 

25.0 Total 

15.0 Total 
 275 Total

 225 Total

 175 Total

 125 Total

 85 Total

 50 Total
250°F
to 400°F

(121°C
to 204°C)
Steel blade with stiffeners (when required)
Grease lubricated bearings mounted to frame
Full length solid steel axle
Full circumference blade stop
CDR82
Round channel flange frame (10 ga. to 3/16")
  Odor Control

Face and Bypass

Inceneration
60"

48"

36"

24"

12"
(1524)

(1219)

(914)

(610)

(305)
6.00/1.5

6.00/1.5

8.00/2.0

8.00/2.0

10.00/2.5
4000/20.3

4000/20.3

5000/25.4

6000/30.4

6000/30.4
45.0 Total 

35.0 Total 

28.0 Total 

25.0 Total 

15.0 Total 
 225 Total

 175 Total

 125 Total

 85 Total

 50 Total
250°F
to 400°F

(121°C
to 204°C)
Steel blade with stiffeners (when required)
Stainless steel press fit bearings
Full length solid steel axle
Maximum size 60"
CDRS82
16 ga. x 8" galvanized round channel frame up to 18"
  Isolation

Fume Hoods

Parmacutical Ventilation
48"

36"

24"

12"

6"
(1219)

(914)

(610)

(305)

(152)
4.00/1.0

4.00/1.0

4.00/1.0

4.00/1.0

4.00/1.0
2500/12.7

2500/12.7

2500/12.7

4000/20.3

4000/20.3
11.3 Total 

8.5 Total 

5.7 Total 

2.9 Total 

1.4 Total 
 35 Total

 28 Total

 25 Total

 15 Total

 7.5 Total
250°F

(121°C)
12 ga. x 8" galvanized round channel frame 18" and above
12 ga. flange
Single skin 16 ga. blade
1/2" shaft to 24," 3/4" shaft 24" and above
CDRI95
3/16" to 5/16" thick channel frame
  Thermal Oxidizers

High Temperature Round Ducting

Incineration
Consult Ruskin
One piece 3/8" to 3/4" thick blades
Minimum 1" stub axles
Adjustable ceramic tadpole seal
500° to 1200°F service
CD80BOX
Double skin box 10 ga. blades
  Industrial Fan Discharge

High Pressure

Tunnel Ventilation

72"

60"

48"

36"

(1829)

(1524)

(1219)

(914)
25.00/6.25

34.00/8.70

40.00/10.00

47.00/11.80
6000/30.5

6000/30.5

6000/30.5

6000/30.5
9.0 

9.0 

9.0 

9.0 
 —

 —

 —

 —
482°F

(250°C
2 Hour)
Relubricable ball bearings mounted outboard of frame
3/16" steel channel frame
1" axle up to 48", above 48" wide consult Ruskin
Shaft packing seals
Higher temperature and pressure rating available- consult Ruskin.
IVD
10 ga. steel round channel frame
  Fan Inlet

Round Duct Balancing

System Control
60"

48"

36"

24"

12"
(1524)

(1219)

(914)

(610)

(305)
6.00/1.5

8.00/2.0

8.00/2.0

8.00/2.0

8.00/2.0
2242/11.3

3025/15.3

4102/20.8

6529/33.1

14103/71.6
— 

— 

— 

— 

— 
 90

 103

 125

 167

 282
250°F
to 400°F

(121°C
to 204°C)
Multiple 16 ga. blades
1/2" plated axles
Open or bullet nose hub
External linkage with stainless press fit bearings
TD102AF
9" x 2" galvanized frame (opt aluminum)
  Aluminum Tunnel Damper

250°C/482°F
1 Hour Tested

Track and Fan Isolation
60"

48"

36"

24"
(1524)

(1219)

(914)

(610)
10.00/2.50

15.00/3.80

20.00/5.00

25.00/6.30
4000/20.3

4000/20.3

5000/25.4

5000/25.4
5.2 

5.2 

5.2 

5.2 
 —

 —

 —

 —
482°F

(250°C
2 Hour)
7.75" wide aluminum 215RI anodized blade
3/4" stainless steel axles bolted to blade
10 ga. stainless steel side linkage
Flexible stainless steel side seals
PDR92
Flanged channel frame
  Make Up Air

System and Duct Pressure

Pressure Relief
52"

48"

36"

16"
(1321)

(1219)

(914)

(406)
Consult
Ruskin
6000/30.4

6000/30.4

6000/30.4

6000/30.4

6000/30.4
.045 

.05 

.07 

.13 

.24 
 40

 35

 28

 25

 20
 
Offset blade
Grease lubricated bearings mounted outboard of frame
External counter weight
Elastomeric seal
*
Multiple section dampers are available in unlimited sizes.
 
Leakage information based on pressure differential of 1" w.g. (0.248 Kpa) tested per AMCA 500.
**
Higher temperature ratings available consult Ruskin.
 
Note: Alternate materials such as stainless steel construction available as an option.