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Wall louvre, heavy-duty series 451<br />
m a t e r i a l<br />
c r o s s - s e c t i o n s<br />
• Made from aluminium sections: AlMgSi 0.5<br />
(according to EN 12020-2)<br />
• Finishing: anodised in satin/bronze colour (20 microns)<br />
or powder-coated in any RAL or Syntha Pulvin ® colour<br />
(60-80 microns) (for UK min 40 microns)<br />
• Stainless steel 304 mesh (6 x 6 mm) or<br />
insect screen (2.3 x 2.3 mm) on request<br />
o p t i o n s<br />
• Water channel<br />
• Variable blade pitch<br />
f i x i n g<br />
• Brackets ref. 429 included.<br />
• For louvres larger than approx. 3 m², a reinforcing<br />
backstructure is required.<br />
Standard blade pitch<br />
Option: variable<br />
blade pitch<br />
Bracket<br />
ref. 429<br />
d i m e n s i o n s<br />
• Depth to fit: 59.5 mm<br />
• Flange size: 25 mm<br />
• Minimum dimensions: 300 x 300 mm<br />
technical specifications 451<br />
Airflow (EN 13030)<br />
K-factor (supply) 13,62<br />
K-factor (discharge) 14,91<br />
C e coefficient 0,271<br />
C d coefficient 0,259<br />
Technical data<br />
Visual free area 70%<br />
Physical free area 46%<br />
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