The Dualair® Component System
Secondary Glazed Louvres

Dualair at a Glance
The Altair Dualair Louvre Component System is a secondary glazed unit with sophisticated aesthetics and reduced installation costs. This makes it ideal for apartment or school projects, particularly those with high Rw or low U-value requirements.
Watch a video about the benefits of the Dualair System
Water Penetration
Maximum Ventilation
Aesthetics
Reduced Installation Costs
Acoustic Insulation
Thermal Insulation
Shading / Privacy
Dualair® Window System 3D Models
INTERACTIVE ON-LINE VIEWING
Dualair Component System 3D Models



Dualair Component System Dimensions
Dualair Component Performance Data
Dualair System in Alspec McArthur Evo 150mm Framing.
Ultimate Wind Pressure | Water Penetration Resistance | Window |
---|---|---|
2,000 Pa | 550 Pa | 18 blade (h) x 1127mm (blade length) Stronghold Toughened Glass Blades |
3,400 Pa | 600 Pa | 18 blade (h) x 900mm (blade length) Stronghold Toughened Glass Blades |
6,000 Pa | 620 Pa | 18 blade (h) x 736mm (blade length) Stronghold Toughened Glass Blades |
Dualair System in Alspec Hunter Evo 150mm Framing.
Ultimate Wind Pressure | Water Penetration Resistance | Window |
---|---|---|
2,000 Pa | 600 Pa | 18 blade (h) x 1127mm (blade length) Stronghold Toughened Glass Blades |
Dualair System in Alspec McArthur Evo 150mm Framing.
Outer Blade | Inner Blade | U-Value | SHGC |
---|---|---|---|
Clear 6mm glass | Clear 6mm glass | 3.4 | 0.47 |
Clear Low-E 6mm glass | Clear 6mm glass | 2.8 | 0.14 |
Clear Low-E 6mm glass | Clear Low-E 6mm glass | 2.4 | 0.10 |
Dualair System in Alspec Hunter Evo 150mm Framing.
Outer Blade | Inner Blade | U-Value | SHGC |
---|---|---|---|
Clear 6mm glass | Clear 6mm glass | 3.8 | 0.46 |
Clear Low-E 6mm glass | Clear 6mm glass | 3.2 | 0.15 |
Clear Low-E 6mm glass | Clear Low-E 6mm glass | 2.9 | 0.11 |
Dualair System in Alspec McArthur Evo 150mm Framing or Alspec Hunter EVO 150mm Framing.
If higher sound performance is required please contact Breezway on 1800 777 758.
Outer Blade Material | Inner Blade Material | Optimised for Water Penetration Resistance |
---|---|---|
R'w (C;Ctr) | ||
Toughened Glass | Toughened Glass | 35 (-1;-3) |
Aluminium | Toughened Glass | 35 (-2;-4) |
Dualair System Standard Heights
For Altair Dualair Louvre Gallery standard heights please see the size chart on the right. Off Standard heights and 102mm heights are not available.
Dualair System Widths
Altair Powerlouvre Windows
- Minimum bay width for 2-9 blade high windows = 400mm
- Minimum bay width for 10-18 blade high windows = 500mm
Dualair System Brochure
Secondary Glazed Louvre Component System.
View PDF.
Heights for Dualair System with 152mm Blade | |||
---|---|---|---|
Head | Alspec McArthur EVO | Alspec McArthur EVO | - |
Sill/Transom | Alspec McArthur EVO | Alspec Hunter EVO Acoustic | - |
No. of Blades | Window Height (mm) | Window Height (mm) | Daylight Opening Height (mm) |
2 | 418 | 423 | 328 |
3 | 558 | 563 | 468 |
4 | 698 | 703 | 608 |
5 | 838 | 843 | 748 |
6 | 978 | 983 | 888 |
7 | 1118 | 1123 | 1028 |
8 | 1258 | 1263 | 1168 |
9 | 1398 | 1403 | 1308 |
10 | 1538 | 1543 | 1448 |
11 | 1678 | 1683 | 1588 |
12 | 1818 | 1823 | 1728 |
13 | 1958 | 1963 | 1868 |
14 | 2098 | 2103 | 2008 |
15 | 2238 | 2243 | 2148 |
16 | 2378 | 2383 | 2288 |
17 | 2518 | 2523 | 2428 |
18 | 2658 | 2663 | 2568 |
The sizes in the table above are frame sizes only.
CAD Drawings
Altair® Dualair Component System CAD Drawings
Breezway offers a collection of CAD drawings for the complete Altair Dualair Component System product range. For animated renders, please see the 3D Model section above.
You can download all CAD files in this section here Altair Dualair Component System CAD Drawings or the individual files below.
Blade Formulas

Blade Cut Length Alspec McArthur EVO Jambs
Glass & aluminium blades: Blade Length = window width – 145mm
Glass & aluminium Stronghold blades: Blade Length = window width – 141mm
For allowable length of blades refer to AS1288 and Breezway Louvre Windows PRODUCT PERFORMANCE WARRANTY.
Note: Allowable tolerance = +/-0.6mm

Blade Cut Length Alspec Hunter EVO Jambs
Glass & aluminium blades: Blade Length = window width – 155mm
Glass & aluminium Stronghold blades: Blade Length = window width – 151mm
View/download Dualair System Blade Formulas
Dualair Component Product Code
Altair® Dualair Product Code
The Dualair Component System can be configured under a single product code which ensures you include all components necessary for the system and allows you to carry forward configurations that are common to all items. For quote and order forms, please visit the Purchasing page.
Description | Code | Unit |
---|---|---|
152mm Altair Dualair Gallery Sets | 190 000 770 | Per gallery set |
Installation Instructions
View/download Dualair Assembly Instructions
View/download Dualair System Frame Head Pre-Processing
View/download Dualair System Frame Sill & Jamb Pre-Processing
Checklist & Specification
Dualair System Checklist
REQUIRED INFORMATION viewed from inside | OPTIONAL INFORMATION |
---|---|
Dualair System height expressed as blade quantity | Handle side |
Window width, including Alspec Jambs. | Keylock |
Jamb plate to suit McArthur EVO 150mm Frame or Hunter EVO Acoustic 150mm Frame | Restricted openings |
Manual or PowerlouvreTM Gallery to inside | |
With or without the Stronghold® System | |
Handle type, if inner gallery is manually operated | |
Clips & Handle Colour | |
Blade Types (inner & outer) |
View/download Dualair System Checklist
Dualair System Recommended Specification
A tight specification will help to make sure that what you specify ends up in your building thereby achieving your design objectives.
The louvre windows shall be Breezway Altair Dualair Secondary Glazed Louvre Windows.
Unique features:
- Altair Louvres in a secondary glazing configuration within 150mm commercial glazing.
- Minimum acoustic rating of R’w.35.
- Maximum U-value of 3.8 W/m2.K.
- Optional pressure equalising design and patented drainage channels for superior water performance.
- Patented ‘Living Hinge’ design that pulls the clips tightly against the channel when closed for superior water performance and air infiltration.
- Low profile keylock with lock barrel housed inside the louvre channel.
- Passed testing to 40,000 open/close cycles for long operational life.
- Passed testing to 15,000 lock/unlock cycles for long operational life.
- Altair Dualair Louvres have passed AS2047 testing at 17 blades high.
- Powerlouvre motors are fully concealed within the head of the frame.
- Pinned design that mechanically retains blades within the clips to prevent blade dislodgement under human impact (optional with the Stronghold System).
- Custom designed for the Alspec McArthur EVO 150mm Centre Pocket frame and the Alspec Hunter EVO Acoustic 150mm frame.
View/download Dualair Specification