FIXED
BLADE EXTERNAL
LOUVRES |
FIXED BLADE EXTERNAL LOUVRES (FBL/NB and
FBL/WB) are traditionally suited for air intake or discharge at ductwork start and ends of
building elevations. They are also often utilised as an architectural feature to modern
building design with their versatility lending itself to configurations of circular or
trapezoidal designs. Roof top plant screening is also available. Full details of these
special units are available on request from our sales office who can offer a full design
service. Both narrow blade (pitch of 38mm) and wide blade (pitch of 76mm) external
louvres have 45 deg blade extrusion with an integral rain lip.
Standard 32mm wide undrilled outer flanges in aluminium have fully welded mitre corners as
standard, with reverse angle flanges for recess mounting also available as an alternative.
All units are complete with a birdscreen. Insect screens and extended lower rainlips are
available optional extras.
FBL louvres are mill aluminium finished as standard, but also available are stove enamel,
polyester powder coating to appropriate BS or RAL numbers and Syntha-Pulvin finishes to SP
standard colour range. |
Narrow Blade Louvres
38mm Pitch |
Wide Blade Louvres
76mm Pitch |
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| Dimensions
Bird Wire Mesh Standard
A = Opening Duct size |
REVERSE BUTT FLANGES FOR HORIZONTAL & VERTICAL JOINTS
Louvres exceeding 1800mm in height are
supplied in sections with reverse butting flanges drilled for site fixing on the FBL/WB
only. FBL/NB require a plate to be fixed to the reverse butt flange as per detail.
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Louvres are manufactured in one piece units up to 1800mm square.
VERTICAL SUPPORT
Louvres exceeding 1800mm in width can be supplied in section with vertical support
channels for alignment and site fixing if individual; louvre face details are required.
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Supporting steel can be
supplied for large louvre applications generally in line with the detail above, for
details of sizes and location please contact our sales office.
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