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Altus Window Systems is the leading brand behind some of New Zealand's most innovative window and door designs.

When you are choosing windows and doors, we are here to help you achieve your vision. Altus Window Systems have been thermal technology experts for over 20 years. Whether your project is big or small, residential or commercial, we’ve got the solution. 

Sharing your vision

Altus Windows Systems are cleverly crafted to meet the demands of the New Zealand environment and the Kiwi lifestyle. Designed to blend seamlessly together, you have greater freedom to mix and match without the need to compromise.

Altus Window 'Systems' are the different ranges of joinery designed to suit various sizes and performance levels of windows and doors for a given project. These are outlined below and can also be accessed via the tile above.

Our window and door products sit within the window systems. Some of the highlights products include: Ranchslider™, Ranchstacker™, Euroslider™, Eurostacker™, Levelstep™ sills and Foldback™ Bifold


We've been thermal technology experts for over 20 years.

The H1 building code compliance changes offer an exciting time in NZ building as they will result in more efficient, warmer in winter (plus cooler in summer) and overall more comfortable buildings and homes for New Zealanders to live in. We have for many years strived to better the lives of New Zealanders through our innovative product systems helping to make homes warmer, dryer and healthier.

Altus is the only manufacturer to offer two types of thermal break technologies. Our Southern41™ Thermal System utilises the Pour'n'Debridge resin method to create a thermal break between the outer and inner parts of the window or door profile. Alternatively, the Pacific52™ Thermal System utilises a polyamide strip that is crimped to separate profiles to form a thermal break between inside and outside.

Click HERE to download our handy H1 guide
Click HERE to read more


Available exclusively through our fabricator network

We are a brand you can trust and our national network of exclusive fabricators have been providing standard and bespoke windows and doors for over 70 years. You will know them by reputation: Bradnam’s™, Fisher™ Windows, Nebulite™, Nulook™, Rylock™ and Vistalite™. And in addition our Fabrication product brands; dual GLAZE™ and Stellar Doors™.

Altus may be a relatively new name, but our history is long and dedication to the industry is second to none.


Bradnam's have built a successful track record supplying leading national building companies throughout New Zealand with single and double glazed joinery.



Fisher™ is an established leader in fine craftsmanship of aluminium joinery for the unique New Zealand environment.



Nebulite® leads the market with quality, stylish window and door products and reliable service.



Nulook offers a range of products specifically suited to New Zealand’s diverse climate and conditions.



We've been making quality aluminium joinery since 1954. But what we pride ourselves most on is our service.



At Vistalite® we are passionate about our people, our product and the customer experience we offer.


dual GLAZE™

dual GLAZE™


Launched in 2009, the dual GLAZE™ double glazing network was the first national network of qualified aluminium joiners to both enter and lead the residential glass replacement market. For over 10 years they have been making New Zealand homes healthier, warmer and drier all year around.


Baltic Commercial Fabricators

Non-branded &
Commercial Fabricators

Framerite Installations Ltd is a privately owned independent company, that has been operating successfully since 1971 (48 years).

We manufacture the best range of Commercial Aluminium Sections, (BALTIC Commercial Systems) providing top quality Window Systems, Curtain Walls and Shopfronts.



Timber Joinery since 1937

For 80 years McNaughton’s has built a reputation supplying the best products with the best service. McNaughton Windows & Doors specialise in manufacturing timber joinery, including the ALTI™ Composite system, for architecturally designed new build and renovation projects.

Whether it’s windows, doors, shutters or stairs, McNaughton’s have a team of experienced visionary designers and craftsman ready to assist.