Aluminium continuous louvre wall, whereby the multiple Z-shaped louvre blades are locked into place directly on the support profile using Duco's patented ‘Direct Clip’ system. The strong louvre blade system requires a minimal support structure and is vandal-proof. Two types of perforations are available. Ten-year warranty.


Continuous louvre wall.

Standard product features


  • Louvre blades and support profiles: Aluminium, Al Mg Si 0.5.
  • Louvre holders: Polyamide, PA 6.6, reinforced with glass fibre.


  • Pitch: 37.5 mm.
  • Depth: 30 mm.

Ventilation performance:

  • Physical free area: P1 slots: 34%; P2 slots: 48%.
  • Ce: P1 slots: 0.24; P2 slots: 0.28.
  • Cd: P1 slots: 0.23; P2 slots: 0.28.
  • K-factor inlet: P1 slots: 17.7; P2 slots: 12.85.
  • K-factor outlet: P1 slots: 18.3; P2 slots: 12.73.

Water resistance:

  • 0 m/s air velocity: P1 slots: Class A; P2 slots: Class B.
  • 0.5 m/s air velocity: Class B.
  • 1 m/s air velocity: P1 slots: Class B; P2 slots: Class C.
  • 1.5 m/s air velocity: P1 slots: Class B; P2 slots: Class C.
  • 2 m/s air velocity: Class C.
  • 2.5 m/s air velocity: Class D.

Maximum span between two support sections:

1970 mm.


Finish/ Colour:

  • Anodized: Qualanod-compliant, coating thickness 15–20 µm, standard natural colour (clear anodizing).
  • Powder coated: Qualicoat-compliant, minimum average coating thickness 60–80 µm, standard RAL colours with 70% gloss.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
25-55-45/150 Louvre screen system

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Duco Ventilation & Sun Control NV


+44 (0) 333 772 7734

Product reference

DucoWall Solid W 30Z

Finish/ Colour

[Powder coated, RAL]
Insert colour requirements.

Support sections

52 mm recess depth, for light loading.
100 mm recess depth, for heavy loading.


100% false louvre.
Small slots, visual free area: 60%, perforated louvre blades as insect screen.
Large slots, visual free area: 86%.


[Not applicable]
For NP and P1 slots.
[Not required]
[Stainless steel mesh, 2.3 x 2.3 mm]
For P2 slots only, resistant to insects, vermin and birds.
[Stainless steel mesh, 6 x 6 mm]
For P2 slots only, resistant to vermin and birds.

Manufacturer details

Handelsstraat 19,
8630 Veurne,
Tel +44 (0) 333 772 7734
Fax +32 58 330044
NBS Plus