483760 Edition II II | Page 241

Complete
LD

RSK

Silencer for circular ducts

Backdraft Damper

Easily-fitted silencer for circular ducts,fitted with a connection which is compatible with a standard spiral duct. The LD
effectively reduces noise in the duct.
Two silencers can be used together in
installations where noise reduction is critical. For the most
effective noise reduction, the silencer should be fitted immediately behind a fan
or bend.
• Insulation thickness 2 inches

| 242

Backdraft damper for circular ducts, manufactured
from galvanized sheet steel. The two blades are
spring-loaded. Every damper is built with performance
in mind.
• Damper can be mounted vertically

Dimensions

Dimensions

Ød0
Ødi

l

Model

ød1

ød0

I

Weight,
lbs

Item #

List Price,
USD

LD 4

4

8

235/8

13

411282

100.00

LD 5

5

9

235/8

16

411283

113.00

LD 6

6

1

10 /4

5

23 /8

17

411284

130.00

LD 8

8

12 /2

23 /8

20

411125

147.00

LD 10

10

14

351/2

26

411286

227.00

LD 12

12

173/4

351/2

35

411287

294.00

LD 16

16

25

351/2

56

411288

352.00

1

5

D

Dimensions

ø Duct

List Price,
USD

RSK 4

4

3 1/4

1

411112

16.00

1

A

B

C

14
16
20
22
B

7
8
10
12

5

3 /8

1

411113

19.00

6

3 1/8

1

411114

20.00

RSK 8

8

3 /8

1

411115

28.00

RSK 10

10

3

2

411116

34.00

12

3

2

411117

46.00

14

3

6 /8

4

411198

144.00

16

6 3/8

5

45125

179.00

1

Insulated Flex Duct

D

14
16
22
24

RSK 5
RSK 6

FIDT

A

6
8
10
12

Item #

Dimensions are in inches

RC Series Dimensions
RC 6
RC 8
RC 10
RC 12

Weight,
lbs

RSK 14

C
Roof Cap with damper flap closure, duct connection and screened exhaust opening.

an duct size.
Model ø Duct†

D

RSK 16

Roof Cap
3
3
3
3

øA

RSK 12

RC
D

Model

3
3
3
3

C

D

ø Duct
A

Dimensional information in inches.
† Duct connections are 1/8”A B than duct size.
smaller C
Model
D
Duct

Weight,
lbs

Item #

List Price,
USD

Flexible round insulated duct. The insulation provides greater thermal efficiency to save energy.
The product is also covered in a heavy duty, silver
jacket for durability. The duct is UL listed. Available in 25-foot lengths.
Model

øD

Weight,
lbs

Item #

List Price,
USD

FIDT 4

4

7

411061

35.00

RC 4

12

12

5 1/2

4

4

2

411310

23.00

RC 5

12

12

5 1/2

4

4

3

411311

91.00

RC 6

14

14

7

4

6

3

411312

100.00

FIDT 5

5

8

411062

40.00

RC 8

16

16

8

4

8

5

411313

116.00

FIDT 6

6

9

411064

46.00

RC 10

22

20

10

4

10

7

411314

142.00

FIDT 8

8

11

411065

56.00

RC 12

22

22

12

4

12

9

411315

162.00

FIDT 10

10

13

411322

68.00

Dimensions are in inches

B

Dimensions are in inches

fantech