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Altair™ Louvre Window Sizes

While Altair™ Louvre Windows can be manufactured in any size specified, the site rating of a building will affect the maximum allowable window height and bay width which are caused by likely exposure to high winds and rain. Please refer to the Altair™ Product Performance Warranty for more information.

Size Constraints

When using a Breezway Window System:

For windows larger than these dimensions, please contact us.

For maximum sizes of Altair™ Louvres in other window manufacturer's window systems, please contact your window manufacturer.

Standard Heights

Altair™ Louvre Windows use blades that are either 102mm or 152mm high. Multiples of these blades give standard window heights. The window frame into which the Altair™ Louvres are fitted is added to calculate the total window height. Off-standard heights are achieved through a cut-down fixed blade fitted at the top of the window.


Table 1: Altair™ Louvre Standard Heights
  Slimline Window System standard heights Easyscreen™ Window System standard heights (Insect screens can be fitted to the outside of this size frame) Galleries/Strip Hardware and Weatherstrip standard heights*
No. of Blades 152mm 102mm 152mm 102mm 152mm 6” 102mm 4”
2 345mm - 371mm - 330mm 13” - -
3 485mm 335mm 511mm 361mm 470mm 18-1/2” 320mm 12-19/32”
4 625mm 425mm 651mm 451mm 610mm 24-1/32” 410mm 16-5/32”
5 765mm 515mm 791mm 541mm 750mm 29-17/32” 500mm 19-11/16”
6 905mm 605mm 931mm 631mm 890mm 35-1/32” 590mm 23-7/32”
7 1045mm 695mm 1071mm 721mm 1030mm 40-9/16” 680mm 26-25/32”
8 1185mm 785mm 1211mm 811mm 1170mm 46-1/16” 770mm 30-5/16”
9 1325mm 875mm 1351mm 901mm 1310mm 51-9/16” 860mm 33-27/32”
10 1465mm 965mm 1491mm 991mm 1450mm 57-3/32” 950mm 37-13/32”
11 1605mm 1055mm 1631mm 1081mm 1590mm 62-19/32” 1040mm 40-15/16”
12 1745mm 1145mm 1771mm 1171mm 1730mm 68-1/8” 1130mm 44-1/2”
13 1885mm 1235mm 1911mm 1261mm 1870mm 73-5/8” 1220mm 48-1/32”
14 2025mm 1325mm 2051mm 1351mm 2010mm 79-1/8” 1310mm 51-9/16”
15 2165mm 1415mm 2191mm 1441mm 2150mm 84-21/32” 1400mm 55-1/8”
16 2305mm 1505mm 2331mm 1531mm 2290mm 90-5/32” 1490mm 58-21/32”
17 2445mm 1595mm 2471mm 1621mm 2430mm 95-21/32” 1580mm 62-7/32”
18 2585mm 1685mm 2611mm 1711mm 2570mm 101-3/16” 1670mm 65-3/4”
19 2725mm 1775mm 2751mm 1801mm 2710mm 106-11/16” 1760mm 69-9/32”
20 2865mm 1865mm 2891mm 1891mm 2850mm 112-7/32” 1850mm 72-27/32”
21 3005mm 1955mm 3031mm 1981mm 2990mm 117-23/32” 1940mm 76-3/8”
22 - 2045mm - 2071mm - - 2030mm 79-29/32”
23 - 2135mm - 2161mm - - 2120mm 83-15/32”
24 - 2225mm - 2251mm - - 2210mm 87”
25 - 2315mm - 2341mm - - 2300mm 90-9/16”
26 - 2405mm - 2431mm - - 2390mm 94-3/32”
27 - 2495mm - 2521mm - - 2480mm 97-5/8”
28 - 2585mm - 2611mm - - 2570mm 101-3/16”
29 - 2675mm - 2701mm - - 2660mm 104-23/32”
30 - 2765mm - 2791mm - - 2750mm 108-9/32”
31 - 2855mm - 2881mm - - 2840mm 111-13/16”
32 - 2945mm - 2971mm - - 2930mm 115-11/32”
33 - 3035mm - 3061mm - - 3020mm 118-29/32”

* To calculate the gallery height only, deduct 10mm.

Altair Powerlouvre™ Windows

Altair Powerlouvre™ Windows can now have a maximum of 18 blades however, due to the need to accommodate the motor, they must have a minimum bay width of 400mm.

Table 2: Easyscreen Powerlouvre™ Window Sizes
Blade Count 152mm Gallery 102mm Gallery  
  • Maximum width = 4000mm ( Frames over these dimensions will need to be coupled on site or at a window fabricator’s factory.)
  • Minimum bay width for 2-9 blade high windows = 400mm (with remote control 460mm)
  • Minimum bay width for 10-18 blade high windows = 500mm (with remote control 600mm)
  • Standard heights only.
  • Up to 6 galleries (bays) can be included in a single surround frame.
  • Combination louvre and fixed light bays are available.

4 Bay Powerlouvre™ Window in an Easyscreen™ Frame
2 371mm NA
3 511mm 361mm
4 651mm 451mm
5 791mm 541mm
6 931mm 631mm
7 1071mm 721mm
8 1211mm 811mm
9 1351mm 901mm
10 1491mm 991mm
11 1631mm 1081mm
12 1771mm 1171mm
13 1911mm 1261mm
14 2051mm 1351mm
15 2191mm 1441mm
16 2331mm 1531mm
17 2471mm 1621mm
18 2611mm 1711mm

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