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L
DUCTING, LOUVRES & GRILLES
L-8
© FANTECH
2016
BACKDRAFT SHUTTERS - TYPE WSK
WSK shutters are airstream-operated and designed for surface
mounting.
Flaps have an aerofoil section with the weight concentrated at
the pivot point. This feature ensures easy opening and minimal
pressure drop.
Units are screw fixing and suitable for internal or external wall or
duct mounting in the vertical plane.
Features
O
Moulded in impact-resistant UV-stabilised PVC.
O
Nylon spindles give silent and maintenance-free operation.
O
Generally used for exhaust applications. Maximum air
velocity, 11m/s.
O
Finished in a grey colour.
O
No parts to corrode.
Testing
Air flow tests based on ISO5801:2007.
The above are only typical selections, as the shutters may be
used with other fan types or over openings having dimensions
generally conforming to dimension D in the dimension section.
DØ
A
B
C
E
Airflow
Model
WSK..
A
B
C DØ E
10
123 90
12
93
30
12
160 110 15
129 30
15
194 140 22
159 27
20
242 182 21
210 27
25
294 232 26
258 40
30
347 276 26
310 45
35
397 310 26
360 40
40
462 364 26
422 75
45
501 395 31
462 65
50
549 455 31
510 70
The Air-operated backdraft shutters shall be of the WSK series
as supplied by Fantech and be of the model number shown on
the schedule/drawing.
They shall be manufactured of UV-stabilised PVC and include
nylon spindles.
Select the required unit from the selection or dimension tables
shown above.
Dimensions, mm
DESCRIPTION
DIMENSIONS
HOW TO ORDER
SUGGESTED SPECIFICATIONS
SELECTION TABLE
PRESSURE LOSS GRAPH
Ring Plate & Vogue
Series fans
RP/VCW
Duct mounted
fans. Suit duct dia.
mm.
Shutter Model
-
125
WSK12
132
150
WSK15
202/4
200
WSK20
-
250
WSK25
252/4
300
WSK30
302/4/6
-
WSK30
354/6
-
WSK35
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