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Altherm Window Systems produce windows and doors with a recognised tradition of design excellence.

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About ALTHERM Window Systems

The Altherm brand is one of the best known brands in the New Zealand building industry and has been a leader in innovation in windows and doors for over 40 years. It has a strong following in the design community. In addition to the popular Altherm Residential range the brand network also offers a complete portfolio of high performance products for both thermally efficient and larger format windows and doors.

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