Prese d'aria esterna

External weather louvres to protect ventilation and air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings. In combination with insect screens, they also provide protection against insects. They are used for a wide variety of applications with regard to air flow and can also cover large installation openings. For single grilles, the following applies:

• Maximum width of 2400 mm, maximum height of 2310 mm, maximum area of 4 m² (aluminium variant also as continuous horizontal runs)
• Low differential pressure due to aerofoil blades
• Low air-regenerated noise due to a rounded drip edge
• Simple and quick installation due to perimeter border
• Variants made of galvanised sheet steel, aluminium or stainless steel
• Large-area arrangement of several single grilles in combination with support structure provided by others possible to cover very large installation openings  

Optional equipment and accessories

• Installation subframe
• Can be combined with multileaf or non-return dampers
• Insect screen
• Powder-coated or with anodised finish

External weather louvres – specifically for façade installation – as a protection of air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings.

• Maximum width of 2000 mm, maximum height of 2500 mm per section
• For installation into façades or for the construction of enclosures for machinery or electrical equipment
• Low differential pressure due to aerofoil blades
• Low air-regenerated noise
• All aerodynamic data is measured in aerodynamics and acoustics laboratories
• Variants made of galvanised sheet steel or aluminium
• Flexible arrangement of sections for covering large areas (should to be fixed on the support structure provided by others)

Optional equipment and accessories

• Corner section
• Insect screen
• Powder-coated or with anodised finish

Combinations of external weather louvres and non-return dampers as a protection against the direct ingress of rain as well as leaves and birds, and to prevent air from flowing against the intended airflow direction.

• Maximum width 1600 mm, maximum height 1615 mm
• Low differential pressure due to aerofoil blades
• Low air-regenerated noise
• Technical data measured in aerodynamic and acoustic laboratories
• Maximum permissible differential pressure in closing direction: 100 Pa
• In addition to the standard range of dimensions, intermediate dimensions in millimetre increments possible
• Pre-assembled combination, therefore fast and easy to install

Optional equipment and accessories

• Installation subframe
• Insect screen
• External weather louvre, powder-coated or anodised surface

Combinations of external weather louvres and multileaf dampers as a protection against the direct ingress of rain, leaves and birds, and for shut-off and control

• Maximum width of 2000 mm, maximum height of 1995 mm
• Low differential pressure due to aerofoil blades
• Low air-regenerated noise
• All aerodynamic data is measured in aerodynamics and acoustics laboratories
• Aerofoil parallel or opposed hollow blades
• Casing air leakage to EN 1751, class C
• Available in standard sizes and many intermediate sizes
• Pre-assembled combination, hence fast and easy to install

Optional equipment and accessories

• Installation subframe
• Insect screen
• Powder-coated or anodised surface
• Actuators: Open/Close actuators, modulating actuators

External weather louvres to protect ventilation and air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings.

• Maximum width of 1997 mm, maximum height of 1997 mm
• Low differential pressure due to aerofoil blades
• Low air-regenerated noise
• All aerodynamic data is measured in aerodynamics and acoustics laboratories
• Available in standard sizes and many intermediate sizes
• Simple and quick installation due to perimeter border

Optional equipment and accessories

• Installation subframe
• Insect screen
• Powder-coated or with anodised finish

Acoustic louvres as a protection of air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings

• Maximum width of 1800 mm, maximum height of 2250 mm
• Low differential pressure due to aerofoil blades
• Low air-regenerated noise
• All aerodynamic data is measured in aerodynamics and acoustics laboratories
• Absorption material faced with glass fibre fabric and retained by perforated sheet metal
• Double bank of louvre blades for demanding acoustic requirements
• Non-active section, without acoustic function, for a uniform appearance
• Multi-section constructions for large dimensions

Optional equipment and accessories

• Powder-coated