mechanical air louvre 40mm single bank

Product Description

The Thermosash high performance 40mm single bank mechanical louvre system for use in doors.  These louvres are commonly specified as fresh air inlets for mechanical plant and mechanical plant screening. Single bank are not waterproof, and when outdoors, will not offer a dry environment within the clad space.

Product: MAL-40S  |  [Type 7]

Profile Section:

Section Sizes

  • Single-bank 40mm

Performance / Testing

  • BS EN 13030:2001

Maximum Spanning Ability

The spanning ability will vary depending on span required, structural system, and environmental loads (e.g. wind). Thermosash specifically engineers the best design options for your project.

Integrated Elements

Vermin / insect guards can be integrated into this single bank louvre type.

Low-Carbon Aluminium

Thermosash partners with a local NZ-owned extruder achieving a lower carbon footprint than the global average - offering reduced upfront carbon emissions. (find out more about our Sustainable Aluminium).

Aluminium is 100% recyclable and all aluminium from refurbished sites and from our manufacturing process is environmentally managed back to our key suppliers and processed back into raw billet form.


10 years from the date of practical completion.
Min 5 years for design, engineering, quality of materials, fabrication, installation and performance.
Warranty is provided in the form of a site-specific producer statement (PS3 Construction).

Warranty commences from the date of practical completion of the contract works.
All warranties are subject to service and maintenance requirements.


It is recommended by almost all material suppliers that building washing should occur every 3-6 months to prevent staining to glass and prevent environmental pollutants from corroding metals and to maintain the material warranties.

A full maintenance manual is provided on completion of a project for all the elements integrated within a project. Compliance to a maintenance schedule is essential to maintaining the quality of the installed product over time. Using Thermosash-approved facade maintenance contractor/personnel ensures the highest standards are met.

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Key Features

  • Performance Classification BS EN 13030:2001
  • High performance frame system with drainable frame, collects and removes water
  • Architecturally styled hidden mullions allowing continuous line appearance, span varies based on site wind load and blade selection.
  • Aluminium powdercoated / anodised construction for low maintenance and high corrosion resistance
  • Seamless integration with Thermosash systems


Thermosash Mechanical Air Louvres - Brochure

May 2024

Thermosash Mechanical Air Louvres Product Disclosure - documents package



Due to the potential unique and high performance design requirements, a bespoke specification will be created by a mechanical or facade engineer consultant.

When integrated with Thermosash suites and referencing the inclusion we recommend using Masterpec 4211TS Curtainwalls and 4521TS Commercial Windows.

Please contact us to discuss your project early in conceptual development.

  • Specify double or triple bank - when a greater degree of weather proofing is required.


  • Extrusions are high performance polyester powdercoated or anodised, prior to manufacturing.
  • Polyester powder organic coating in accordance with WGANZ PQAS and AS 3715, and AAMA 2604.

Relevant Projects

St Cuthberts School Pool Complex

St Cuthberts School Pool Complex





594-598 Manukau Rd

594-598 Manukau Rd


RTA Studio

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Napier Street GHD


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UOA Engineering - 405

UOA Engineering - 405