Sound attenuating built-in wall grilles manufactured from extruded aluminium profiles. The louvre blades are locked into place quickly and easily on plastic blade holders, and are fitted with sound-attenuating, inflammable mineral wool on the inside. Ten-year warranty.

Applications:

Louvres for wall and window ventilation.

Related literature

The following content references this product:

Standard product features

Material:

  • Louvre blades: Aluminium, Al Mg Si 0.5.
  • Louvre holders: Polyamide, PA 6.6, reinforced with glass fibre.
  • Insulation: Mineral wool.

Frame rebate:

  • G 75L, G 75Z, G 150 and N 150: 48 mm.
  • Panel 130: 37 mm.

Sound attenuation value Rw (C;Ctr):

  • G 75L: 6 dB (0;-2).
  • G 75Z: 6 dB (0;-1).
  • G 150 and N 150: 11 dB (-1;-2).
  • Panel 130: 17 dB (-1;-4).

Ventilation performance:

  • Physical free area: G 75L and G 75Z: 34%; G 150 and N 150: 35%; Panel 130: 31%.
  • Ce: G 75L: 0.25; G 75Z: 0.24; G150 and N 150: 0.3.
  • Cd: G 75L: 0.29; G 75Z: 0.21; G150 and N 150: 0.3.
  • K-factor inlet: G 75L: 16.52; G 75Z: 16.93; G 150 and N 150: 11.04.
  • K-factor outlet: G 75L: 12.14; G 75Z: 21.83; G 150 and N 150: 10.96.

Water resistance:

  • 0 m/s air velocity: Class B (G 75L, G 75Z, G 150 and N 150).
  • 0.5 m/s air velocity: Class B (G 75Z) Class C (G 75L, G 150 and N 150).
  • 1 m/s air velocity: Class C (G 75L, G 75Z, G 150 and N 150).
  • 1.5 m/s air velocity: G 75L and G 75Z: Class D; G 150 and N 150: Class C.
  • 2 m/s air velocity: Class D (G 75L, G 75Z, G 150 and N 150).
  • 2.5 m/s air velocity: Class D (G 75L, G 75Z, G 150 and N 150).

Fixing:

Fixing dowels included (G 75L, G 75Z, G 150 and N 150).

Options

Size (w x h):

Minimum size is 250 x 250 mm; consult manufacturer for details on larger size options.

Finish/ Colour:

  • Anodized: Qualanod-compliant, coating thickness 15–20 µm, standard natural colour (clear anodizing).
  • Powder coated: Qualicoat-compliant, minimum average coating thickness 60–80 µm, standard RAL colours with 70% gloss.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-50/305 Aluminium louvre panel units

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying

Manufacturer

Name:

Duco Ventilation & Sun Control NV

Tel:

+44 (0) 333 772 7734

Product reference

[Duco Acoustic Panel 300]
-
Double row recessed wall louvre, louvre pitch: 130 mm, recess depth: 300 mm, visual free area: 71%.
[DucoGrille Acoustic G 75L]
-
Recessed wall louvre with flange, louvre pitch: 60 mm, recess depth: 82 mm, visual free area: 95%.
[DucoGrille Acoustic G 75Z]
-
Recessed wall louvre with flange, louvre pitch: 60 mm, recess depth: 82 mm, visual free area: 76%.
[DucoGrille Acoustic G 150]
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Recessed wall louvre with flange, louvre pitch: 150 mm, recess depth: 158 mm, visual free area: 74%.
[DucoGrille Acoustic N 150]
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Recessed wall louvre without flange, louvre pitch: 150 mm, recess depth: 165 mm, visual free area: 74%.

Size (w x h)

[ ______ ]

Finish/ Colour

[Anodized]
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Not available with Panel 130.
[Powder coated, RAL]
-
Insert colour requirements.

Mesh

[Not required]
-
For Panel 130 only.
[Stainless steel mesh, 2.3 x 2.3 mm]
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Standard for G 75L, G 75Z, G 150 and N 150, resistant to insects, vermin and birds.
[Stainless steel mesh, 6 x 6 mm]
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Resistant to vermin and birds.
[Stainless steel mesh, 20 x 20 mm]
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Resistant to birds.

Manufacturer details

Handelsstraat 19,
8630 Veurne,
Belgium
Tel +44 (0) 333 772 7734
Fax +32 58 330044
NBS Plus
RIBA CPD