Aluminium Louvre Grille 494

Framed-panel, single-bank, fixed-louvre aluminium ventilator with indirect airflow, for insertion into window.

  • Enables secure, weather resistant ventilation with exclusion of insects. Physical free area: 26 %.
  • Aluminium profiles with choice of finish. Blades at 33.3 mm centres.
  • Suitable for insertion into glazing aperture of double glazed window.
  • Choice of unit to suit glazing unit thickness.
  • Projection of nib to glazing rebate: Choice to suit equivalent glazing thickness.
  • Approximately flush external profile.
  • Projection of internal profile variable with equivalent glazing thickness.
  • Suitable for aluminium, PVC-U, wood or composite frames.
  • Dimensions (minimum): 130 x 130 mm. Made to measure.

General information


Aluminium alloy: AlMgSi 0.5 to DIN 1748

Uniclass 2015

Pr_30_59_48_04 Aluminium louvre panel unitsPrimary


L10/10 Wood windows

L10/15 Wood windows

L10/20 Steel windows

L10/210 Wood windows

L10/250 Wood windows

L10/30 PVC-U windows

L10/31 PVC-U windows

L10/315 Steel windows

L10/33 Proprietary windows

L10/330 Aluminium windows

L10/335 Aluminium windows

L10/350 PVC-U windows

L10/360 PVC-U windows

L10/380 PVC-U windows

L10/390 Proprietary windows

Specification data - Aluminium louvre panel units

Product Reference

Aluminium Louvre Grille 494


Visible aperture (w x h), ___ x ___ mm

Depth of glazing rebate, ___ mm

As drawing ___


With backframe

Nonstandard option.

Without backframe

Standard option.

Blade fixing


Standard option.


Nonstandard option. For extra strength.

Equivalent glazing thickness

24 mm

28 mm

32 mm

Finish (aluminium components)

Anodized, natural

25 µ. Type E6/ C34 to DIN 17611.

Polyester powder coating, RAL colour ___, sheen ___ %

60–70 µ.

Polyester powder coating, Syntha Pulvin colour ___, sheen ___ %

60–70 µ.

Other requirements

Mesh, 2.3 x 2.3 mm

Nonstandard option. Grade 304 stainless steel.

Mesh, 6 x 6 mm

Standard option. Grade 304 stainless steel.

Water channel

Standard product features


Aluminium alloy: AlMgSi 0.5 to DIN 1748.

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