Wall louvre 421R: Round, built-in, heavy-duty series

Round wall louvre (with frame), heavy-duty series

Variants: 421 • 421R

• Made from aluminium sections: AlMgSi 0.5 (according to EN 12020-2)
• Finishing: anodised in satin colour (20 microns) or powder-coated in any RAL or Syntha PulvinR colour (60-80 microns) (for UK min 40 microns)
• Stainless steel 304 insect screen (2.3 x 2.3 mm) or mesh (6 x 6 mm) on request
• Frame assembled by a single weld

Fixing
• Brackets pre-fitted to the frame

Dimensions
• Depth to fit: 57 mm
• Flange size: 22 mm
• Minimum diameter: 400 mm
• Maximum diameter:
– 1400 mm if anodised in satin colour
– 1500 mm if powder-coated in RAL or Syntha PulvinR colour
– over 1500 mm: in two parts