Aluminium Controllable Internal Louvre Grille 441


Slotted-plate aluminium ventilator, with hit-and-miss airflow control, for internal wall recess mount.

  • Enables secure ventilation.
  • Choice of finish.
  • Standard sizes or made to measure.
  • 5 mm projecting flange with recessed faceplate. 21 mm (maximum) flange overlap.
  • Internal slide.
  • Choice of cord, slide knob or rotating knob operation.

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 Controllable Internal Louvre Grille 441

Dimensions (w x h without flange)

217 x 212 mm

Airflow 34 m³/h at 2 Pa.

248 x 212 mm

Airflow 38 m³/h at 2 Pa.

307 x 312 mm

Airflow 87 m³/h at 2 Pa.

___ x ___ mm

As drawing ___



Rotating knob at ventilator

Slide knob at ventilator

Unit width (maximum): 500 mm.

Finish (aluminium components)

Anodized, bronze

25 µ. Type E6/ EV1 to DIN 17611.

Anodized, natural

25 µ. Type E6/ C34 to DIN 17611.

Polyester powder coating, RAL colour ___, sheen ___ %

60–70 µ.



Standard option.

Spring clips

Nonstandard option.

Other requirements

Mesh, 2.3 x 2.3 mm

Standard option. Grade 304 stainless steel.

Standard product features


Aluminium alloy: AlMgSi 0.5 to DIN 1748.


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