Maximum sizes for awning, casement, fixed windows and sashes vary by width, height, wind zone, and glazing requirement. Your local Bradnam's branch will be able to advise you whether a configuration is possible or contact Altus Technical Support.

Note for compliance with NZS4211:2008 and the New Zealand Building Code, a security stay, safety latch, or restrictor may be required for certain sash sizes.

Frame Types

Glazing Beads and Sash Types

Mullions and Transoms, Corner Posts and Coupling Bars

A range of mullions and transoms are available to add strength to cope with higher wind loads.


A standard range of flashings include 95mm, 84mm,71mm, 68mm, 63mm, 58mm, 53mm, 48mm, 45mm, 41mm, 38mm, 31mm, 25mm and 14mm. These have been designed to comply with E2/AS1 Amendment 6 requirements.  


In addition to the usual range of window hardware including multipoint locking handles, casement hinges are also available, allowing many specialist designs to be created. Refer to your local manufacturer for advice.

Support Inquiries

Altus Technical Support call 0800 685 665 or email