Verified by manufacturer 11 days ago
Aluminium wall louvres with sound-absorbing, non-flammable mineral wool.
Louvre for wall ventilation, suitable where reduced noise transmittance is required.
A sound attenuating built-in wall grille, crafted from extruded aluminium profiles. The louvre blades are locked into place fast and easily on plastic blade holders, and are fitted with sound-attenuating, non-flammable mineral wool on the inside.
Features and benefits:
Color | Manufacturer guidanceRange of colours available in either anodized or RAL. |
Finish | Anodized Guidance for specification option: Qualanod-compliant, coating thickness 15–20 µm, standard natural colour (clear anodizing). Powder-coated Guidance for specification option: Qualicoat-compliant, minimum average coating thickness 60–80 µm, standard RAL colours with 70% gloss. |
Material | Aluminium Guidance for specification option: EN AW-6063 T66 (EN573-3) Louvre blades: Aluminium, Al Mg Si 0.5. Polyamide Guidance for specification option: Louvre holders: Polyamide, PA 6.6, reinforced with glass fibre. |
Shape | Rectangle |
Width | 250 mm |
Height | 250 mm |
Warranty description | Ten year Guidance for specification option: Duco Projects provides 10-year warranty cover on Duco system materials covering potential defects in materials and surface treatment, applicable from the date 3 months after delivery or from the date of installation, whichever is the sooner.For motors and for components subject to wear as a result of movement, however, this warranty is limited to 1 year. This warranty is only valid for building projects in European countries (other countries upon request only) and provided normal use and maintenance have been observed. This warranty is on a sliding scale, reducing by 10% a year (e.g.: during the third year 80% of the claim will still be covered by this warranty). This warranty covers the supply of replacement parts on site to be fitted by the installer, or in the event of defective surface treatment, substantiated costs for pre-treating and recoating the material in question. This warranty relates exclusively to the product itself, not to its installation: accordingly, dismantling and assembly costs are not covered by this warranty. Duco Projects’ maximum liability will be exhausted with the resupply of the defective component or complete system. Under no circumstances can Duco Projects be held liable for any other tangible or intangible loss, including consequential losses. A repaired or resupplied product is covered for the remainder of the warranty period. |
Uniclass | |
CAWS | H11/140 Louvres H11/437 Louvres L10/54 Louvres L10/650 Metal louvres |
Product range |
Classification data | |
Size (l x w x d) | 250 x 250 mm. Guidance for specification option: (W x H). Insert requirements. |
Material | Aluminium blades with polyamide PA 6.6 blade holders. Aluminium blades with metal blade holders. |
Finish | Anodized. Guidance for specification option: Qualanod-compliant, coating thickness 15–20 µm, standard natural colour (clear anodizing). Powder-coated. Guidance for specification option: Qualicoat-compliant, minimum average coating thickness 60–80 µm, standard RAL colours with 70% gloss. |
Colour | Anodized. RAL. Guidance for specification option: Standard RAL colours with 70% gloss. Insert requirements. |
Construction | Flanged 48 mm (G). Non-flanged 12 mm (N). |
Air intake and exhaust performance | |
Application | Exhaust. Intake. |
Calculated weighted sound reduction index (Rw) | |
Frequency range | 125 Hz – 4.8 dB. 250 Hz – 4.0 dB. 500 Hz – 7.4 dB. 1000 Hz – 11.4 dB. 2000 Hz – 12.4 dB. 4000 Hz – 13.0 dB. |
Weather performance | |
Water penetration class (minimum) | To BS EN 13030. Class B (v - 0.0 m/s). Class C (v - 0.5 m/s). Class C (v - 1.0 m/s). Class C (v - 1.5 m/s). Class D (v - 2.0 m/s). Class D (v - 2.5 m/s). Guidance for specification option:
Manufacturer guidance0,0m/s. |
Fire performance | |
Fire resistance | Non-combustible damping material (NEN6064). |
Reaction to fire | To EN 13501-1, A1 (damping material). |
Louvre configuration | |
Number of banks | One. |
Blade orientation | Horizontal. |
Blade pitch | 150 mm. |
Blade angle | Fixed. |
Flange | 48 mm. Manufacturer guidanceEqual leg outer frame. |
Depth | 165 mm. Manufacturer guidanceFrame depth. |
Frame width | 60 mm. |
Thickness | 1.5 mm. Manufacturer guidanceProfile thickness. |
Free area | Visual free area: 74%; Physical free area: 35%. |
InputFlowrate | 11.49. Manufacturer guidanceK-factor intake. |
ExhaustAirFlowrate | 11.41. Manufacturer guidanceK-factor exhaust. |
Sound attenuation | 11 Rw dB (-1;-2) C;Ctr. |
Mesh | Without mesh. Stainless steel mesh, 2.3 x 2.3 mm. Guidance for specification option: As standard - resistant to insects, vermin and birds. Stainless steel mesh, 6 x 6 mm. Guidance for specification option: Optional - Resistant to vermin and birds. Stainless steel mesh, 20 x 20 mm. Guidance for specification option: Optional - Resistant to birds. |
Coefficent Entry (Ce) | 0.295. |
Coefficent Discharge (Cd) | 0.296. |
Fixing | Manufacturer guidanceFixing lugs available on request. |
Contains Red List materials | No |
Country of material origin | Belgium |
Country of product manufacture | Belgium |
Manufacturing plant location | |
Material | Aluminium Guidance for specification option: EN AW-6063 T66 (EN573-3) Louvre blades: Aluminium, Al Mg Si 0.5. Polyamide Guidance for specification option: Louvre holders: Polyamide, PA 6.6, reinforced with glass fibre. |
Recyclability | Recyclable Manufacturer guidanceMetals widely recycled. |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 75 % |
Expected Life | 50 year |
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