LDC 355-900 Silencer

Round, for air handling units

Art. no.: 5399

Silencer

Easily-fitted silencer for circular ducts, fitted with a connection that complies with the spiral duct standard. The LDC effectively reduces noise in the duct. Two silencers can be used together in installations where noise reduction is a particularly strong requirement. This is very effective. For the most effective noise reduction, the silencer should be fitted immediately behind a fan or bend. The silencer should be used together with an insulated fan where there is a requirement for noise reduction both in the duct and in the surroundings as a whole. The silencer is delivered with two separate spigots. Insulation thickness 100 mm.

Good attenuation in 125 and 250 Hz bands.

Energy class label

Energy class, Local demand
Material Declaration, BVB, Acceptable 0
Material Declaration, Sunda Hus, Level A or B 0
EPD 0

Technical parameters

Dimensions and weights
Length 900 mm
Weight 27.2 kg

Pressure drop

Images Performance - LDC 355-900 Silencer - Systemair
Noise suppression dB (mid-frequency Hz)

 

63 125 250 500 1k 2k 4k 8k

LDC 100-300

2

2

6

14

21

25

20

11

LDC 100-600

4

3

11

24

36

49

34

17

LDC 100-900

5

4

15

34

50

50

48

23

LDC 100-1200

6

5

19

45

50

50

50

29

LDC 125-300

2

2

6

13

16

20

15

10

LDC 125-600

3

3

9

23

30

40

22

14

LDC 125-900

4

4

12

33

45

50

30

17

LDC 125-1200

5

5

15

43

50

50

38

21

LDC 150-300

1

2

4

10

12

15

8

8

LDC 150-600

-

3

7

20

27

31

16

11

LDC 160-300

1

2

4

10

12

15

8

8

LDC 160-600

2

3

7

19

27

29

14

11

LDC 160-900

2

4

10

28

42

43

20

15

LDC 200-300

1

2

5

8

10

11

5

5

LDC 200-600

2

3

7

16

21

23

9

8

LDC 200-900

2

4

8

24

32

34

13

10

LDC 250-600

3

2

7

13

17

16

8

6

LDC 250-900

3

4

8

20

26

23

10

8

LDC 315-600

0

2

6

11

14

9

4

5

LDC 315-900

1

3

7

16

22

12

6

7

LDC 355-900

-

3

6

13

18

10

6

7

LDC 400-900

1

3

5

10

13

7

5

6

Images Dimensions - LDC 355-900 Silencer - Systemair

L nom

ø di

ø d0

l

900

 

355

 

560

 

900