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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
Aluminium louvre panel units (Pr_30_59_48_04)Primary
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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