The Linear series

Overview of perforations of the Rekton Linear type

certified according to DIN EN 20354 (ISO) 354

Design example

Level of sound absorption

Type of installation

f(Hz)

125

250

500

1000

2000

4000

Without reverberation space

as

0,01

0,08

0,27

0,69

0,91

0,63

50 mm reverberation space

as

0,17

0,42

0,92

0,94

0,82

0,75

Percentage of perforations/open surfacee
Perforation rotates by 90 degrees – horizontal direction

Linear 12-3

gap size 12 mm
slot measure 3 mm
centre distance 15 mm

Design example

Level of sound absorption

Type of installation

f(Hz)

125

250

500

1000

2000

4000

Without reverberation space

as

0,06

0,12

0,33

0,86

0,75

0,39

50 mm reverberation space

as

0,22

0,50

0,95

0,84

0,67

0,44

Percentage of perforations/open surface 13.6 %
Perforation rotates by 90 degrees – horizontal direction

Linear 22-3

gap size 22 mm
slot measure 3 mm
centre distance 25 mm

Design example

Level of sound absorption

Type of installation

f(Hz)

125

250

500

1000

2000

4000

Without reverberation space

as

0,06

0,13

0,38

0,80

0,89

0,58

50 mm reverberation space

as

0,15

0,53

0,96

0,97

0,89

0,73

Percentage of perforations/open surface 20.74 %
Perforation rotates by 90 degrees – horizontal direction

Linear 80-20-3,5

gap size 80 x 3,5 mm
slot measure H 13 mm
centre distance V 100 mm

Design example

Level of sound absorption

Type of installation

f(Hz)

125

250

500

1000

2000

4000

Without reverberation space

as

---

---

---

---

---

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50 mm reverberation space

as

---

--

--

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Percentage of perforations/open surface 21.21 %
Perforation rotates by 90 degrees – horizontal direction

Linear 90-20 3,5

gap size 90 x 3,5 mm
slot measure H 13 mm
centre distance V 110 mm

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