Acoustic Interior Louvre 468 AK/2

Framed panel, double bank, vertical blade, fixed louvre, aluminium ventilator with offset airways and acoustic insulation, for internal door mounting.

  • Enables secure ventilation with acoustic attenuation. Physical free area: 29 %. Suitable for hospitals, schools, sports facilities.
  • Suitable for insertion into flush doors. Door thickness: 37.5–92 mm.
  • Aluminium profiles. 25 mm slots at 85 mm centres. Foam insulation. Concealed fixings to reveal. Flanged to both faces. Choice of standard or special order finishes.
  • Weighted sound reduction index: 8 dB.
  • Air flow (maximum): 100 m³/h at 2 Pa.
  • Standard sizes or made to measure. Requires aperture 7 mm larger than unit dimensions.
  • Height (without flange): 193–788 mm. Intermediate dimensions in 85 mm increments.
  • Width (without flange): 200–788 mm. Any intermediate dimension is possible.
  • Projection: 12 mm, both faces.
  • Similar model 468 AK/1 for walls is available with one flush face, one flanged face.

General information


Aluminium alloy: AlMgSi 0.5 to DIN 1748

Uniclass 2015

Pr_30_59_94_06 Air transfer grillesPrimary


L20/20 Wood flush doors

L20/230 Wood flush doors

L20/25 Wood panelled doors

L20/250 Wood panelled doors

L20/270 Wood doors

L20/30 Wood doors

L20/430 Wood doorsets

P21/895 Door mounted air transfer grilles

Specification data - Air transfer grilles

Product Reference

Acoustic Interior Louvre 468 AK/2

Dimensions (w x h without flange)



292 x 193 mm

Air flow: 25 m³/h (at 2 Pa).

382 x 278 mm

Air flow: 50 m³/h (at 2 Pa).

432 x 363 mm

Air flow: 75 m³/h (at 2 Pa).

452 x 448 mm

Air flow: 100 m³/h (at 2 Pa).

___ x ___ mm

Door thickness

___ mm

37.5–92 mm.

Finish (aluminium components)



Anodized, satin

20 µ.

Polyester powder coating, RAL 9010 (white)

60–80 µ.

Polyester powder coating, Syntha Pulvin colour

60–80 µ.


Anodized, natural

20 µ.

Polyester powder coating, RAL colour ___, sheen ___ %

60–80 µ.

As front

Standard product features


Aluminium alloy: AlMgSi 0.5 to DIN 1748.

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