Introducing the Southern41™ System - a pioneer in the world of residential joinery systems. With its thermally broken aluminium design, this system is engineered to keep your home at the perfect temperature all year round. Say goodbye to chilly winters and sweltering summers, as the Southern41™ System minimises thermal transference, saving you energy and money. 

Designed with a 41mm platform to accommodate double glazing with low-e coated glass, this system offers a wide product range of windows and doors to suit your every need. Whether you're building new, looking to upgrade your windows or revamp your doors, the Southern41™ System has you covered. Elevate your home with the best in aluminium joinery systems - choose the Southern41™ System today.

  • Category
    Aluminium Joinery
  • Country of origin
    New Zealand
  • Type of use
    Commercial and Residential
Scope of use

Residential building, schools, low-rise commercial, renovations


Southern41™ offers: 

  • Structural Strength
  • Thermal Performance
  • Incorporates the Altus Window Systems Proprietary Connection systems (patented)
  • Wide glazing platform for best in show double glazed glass units
Nulook™ Windows & Doors
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About the

Nulook™, established close on half a century ago, is a nationwide network of independently owned licensed window and door fabrication businesses. It is the most comprehensive business of its kind operating under one brand in New Zealand.

Nulook™ has grown through development, acquisition, and amalgamation of the Barker, Rolls, and Circle brands, and more recently the addition of a number of conversions from competing brands as they seek to capitalise on and benefit from the Altus product range and fabricator support. The experienced Nulook network takes great pride in the integrity of the service and products it provides to its customers. Quality control systems ensure licensees maintain Nulook’s reputation for excellent service.

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

Our lead residential joinery systems are manufactured using Altus Window Systems patented connection system, to give you more secure weathertight joinery.