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Application
Horizontal blade operable box louvres manufactured
from versacor, armacor, hp200 plastisol or aluminium.
They can be used singly or in horizontal or vertical
runs and can be fitted into openings in masonry, brickwork
or cladding. They are suitable for applications where
control of the airflow is required.
Installation
The VPL is bedded on to mastic sealant in masonry or
brickwork and secured with flashings. They can be bolted
or screwed to sheeting rails in cladding or secured
with flashings.
Performance
The blade design has been tested for structural and
aerodynamic performance to produce optimum spanning
and pressure loss characteristics.
Box frame and blades
Frames and blades are manufactured from versacor protected
metal. Embossed coloured finish in standard versacor,
armacor, hp200 plastisol or aluminium. Other material
specifications are available.
Blade pivots and bushes
Self-lubricating moulded nylon for long maintenance-free
life.
Air Infiltration
Very little infiltration when louvres are in the closed
position.
Birdguards and Insect Screens
Birdguards are available as an optional extra in galvanised,
pvc coated galvanised steel or aluminium, or to suit
customer's requirements.
Insect Screens are available as an optional extra in
expanded aluminium small mesh type M901A (to BS1470:1987)
or stainless steel wire mesh.
Note: birdguards and insect meshes will reduce the
louvre free area.
Controls
-Manual winder handle or remote winder, pole operated.
- Gas strut with cable and winch.
- Remote electric actuator.
Standard heights and widths
See table. Non-standard widths are available.
Measured Free Areas (in m2, blades horizontal)
|
No of Blades
|
Height mm |
Width mm |
|
500
|
1000
|
1250
|
1500
|
|
6
|
950
|
0.295
|
0.655
|
0.751
|
1.015
|
|
7
|
1100
|
0.346
|
0.770
|
0.980
|
1.191
|
|
8
|
1250
|
0.400
|
0.882
|
1.125
|
1.369
|
|
9
|
1400
|
0.448
|
1.000
|
1.142
|
1.541
|
|
10
|
1550
|
0.500
|
1.120
|
1.273
|
1.720
|
|
11
|
1700
|
0.550
|
1.224
|
1.403
|
1.895
|
|
12
|
1850
|
0.602
|
1.337
|
1.534
|
2.073
|
|
13
|
2000
|
0.654
|
1.452
|
1.665
|
2.250
|
|
14
|
2150
|
0.706
|
1.570
|
1.797
|
2.425
|
|
15
|
2300
|
0.759
|
1.686
|
1.933
|
2.600
|
|
16
|
2450
|
0.813
|
1.805
|
2.067
|
2.774
|
|
17
|
2600
|
0.868
|
1.924
|
2.202
|
2.964
|
Opening sizes
Individual louvres. Height +20mm. Width +20mm. Multiple
banks - as above plus 5mm between each louvre box.
Flashings
Head, cill and jamb flashings can be supplied, where
required, to suit customer's requirements.
Weight
17.5 Kg/m2
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