Aluminium Louvre Grille 411

Framed, single bank, fixed louvre aluminium ventilator, for exterior wall recess mounting.

  • Enables secure, weather resistant ventilation with exclusion of insects. Physical free area: 43 %.
  • Aluminium profiles with choice of finish. Blades at 33.5 mm centres.
  • Suitable for insertion into wall openings from exterior. 21 mm (maximum) flange overlap. 5 mm external flange projection.
  • Choice of internal reveal fixing.
  • Dimensions (minimum): 100 x 100 mm. Made to measure.
  • Panel thickness: 28.5 mm.
  • Water tightness at wind speed 1 m/s: Class C (average), without water channel.
  • Similar model 411R available for round apertures.
  • Similar model 421 available with heavy duty profiles.

General information


Aluminium alloy: AlMgSi 0.5 to DIN 1748

Uniclass 2015

Pr_30_59_48_04 Aluminium louvre panel unitsPrimary


L10/650 Metal louvres

Specification data - Aluminium louvre panel units

Product Reference

Aluminium Louvre Grille 411, hit-and-miss

Aluminium Louvre Grille 411, rectangular

Aluminium Louvre Grille 411, round

Aluminium Louvre Grille 411, self-assembly


Single panel, aperture (w x h), ___ x ___ mm

Single panel, to outer edge of frame (w x h), ___ x ___ mm

Multiple panel, as drawing ___

Requires coupling bars.



Nonstandard option. Required for panels larger than 3 m².

Brackets type 418

Standard option. Screw fix to reveal.

Pre-installation frame

Spring clips type 419

Nonstandard option. For small panels.

As drawing ___

Finish (aluminium components)

Anodized, bronze

20 µ. Type E6/ EV1 to DIN 17611.

Anodized, natural

20 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


Coupling bar

For multiple panel unit.

Drainage profile

Projecting drip for fixing to bottom flange.

Dust filter

With aluminium frame. Fixes to interior of louvre panel.

Mesh, 2.3 x 2.3 mm

Standard option. Grade 304 stainless steel.

Mesh, 6 x 6 mm

Nonstandard option. Grade 304 stainless steel.

Water channel

For insertion behind bottom louvre. Projecting internal collection channel with drip to exterior.

Standard product features


Aluminium alloy: AlMgSi 0.5 to DIN 1748.

Third party certifications
  • BSRIA Ltd: Certificate : Watertightness testing to EN 13030
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