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APL (Architectural Profiles Ltd) is New Zealand’s leading window systems supplier.

A privately owned company based in Hamilton, APL was started in 1971 and markets its products through the national brands, Altherm Window SystemsFirst Windows & Doors and Vantage Windows & Doors. Other well known window and door product ranges offered include the Metro SeriesAPL Architectural Series, ThermalHEART, Smartwood, and diverse commercial suites.

APL designs and tests its proprietary systems and also has an on-site aluminium extrusion plant (INEX), surface finishing plants (FINEX for anodising, Colour Works for powder coating), a manufacturing facility (ALPAC) and a distribution fleet (APL Direct) to service its network of over 70 manufacturers nationwide. APL has branch offices which are maintained in Auckland and Christchurch.