Owner's Manual
1
A
B
B-20
200
20
A-50
ØD
1
7 10 15 20 30 40 50
q
V
[l/s]
5
7
10
15
20
30
40
50
ǻ
p
t
[Pa]
30 40 50 60 70 80 90 100 150
q
V
[m
3
/h]
CRU
L
WA
dB(A)
4010/5010 4015
5015
15
20
25
30
1 2
3
4 5 7 01 51 02 03 04 05 07 001
051
q
V
] )m s ( / l [
50 . 0
1.0
51 . 0
2.0
3.0
4.0
5.0
s / ]m[ v
4
5 7 01
51
02 03 04 05 07 001 051 002
003
004
q
V
m[
3
] )m h ( /
URC
]s/m[ v
∆
:T
1-
2-
3-
6
6
3
3
1
1
2
2
5
5
2
2
5
5
0
0
5
5
0
0
0
0
1
1
K
K
2
2
K
K
4
4
K
K
8
8
K
K
4010 5 -4 -2 2 -9 -18 -30 -42
4015 9 -2 -2 2 -10 -17 -30 -37
5010 5 -4 -2 2 -9 -18 -30 -42
5015 7 -6 -2 2 -11 -21 -33 -28
S
S
i
i
z
z
e
e
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AA BB ØØDD WWeeiigghhtt
[
[
m
m
m
m
]
]
[
[
m
m
m
m
]
]
[
[
m
m
m
m
]
]
[
[
k
k
g
g
]
]
4010 400 100 80 1,40
4015 400 150 100 2,00
5010 500 100 80 1,70
5015 500 150 125 2,50
S
S
i
i
z
z
e
e
Theatre diffuser CRU
Lindab reserves the right to make changes without prior notice
2021-11-05
lindab | for a better climate
Dimension
Description
CRU is a rectangular displacement diffuser for installa-
tion under seats in theatres, auditoriums, etc. The diffuser
is supplied with a circular connection. The diffuser can be
supplied with a fixed resistance adapted to the correct air
volume and pressure, specified according to the actual con-
ditions.
• Circular connection with Lindab Safe.
• The diffuser can be supplied with a fixed resistance at
a specified pressure setting.
• The diffuser is available in other dimensions.
Maintenance
The front plate of the diffuser can be removed to enable
cleaning of the internal components. The visible parts of the
diffuser can be wiped with a damp cloth.
Materials and finish
Diffuser: Galvanised steel
Front plate: 1 mm galvanised steel
Standard finish: Powder-coated
Standard colour: RAL 9010 or 9003, gloss 30
The diffuser is available in other colours. Please contact
Lindab’s sales department for further information.
Pressure, sound level
Near zone
The speed is measured 0.5 m from the diffuser.
Order code
Product
CRU aaa
Type
Size: 4010, 4015, 5010, 5015
Example: CRU-4015
AA BB ØØDD WWeeiigghhtt
[
[
m
m
m
m
]
]
[
[
m
m
m
m
]
]
[
[
m
m
m
m
]
]
[
[
k
k
g
g
]
]
4010 400 100 80 1.40
4015 400 150 100 2.00
5010 500 100 80 1.70
5015 500 150 125 2.50
S
S
i
i
z
z
e
e