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aplALTHERM has a strong following among homeowners, designers and builders throughout New Zealand.  In addition to the popular ALTHERM Residential range, our manufacturer network offers a complete portfolio of high performance products for both thermally efficient, and larger format windows and doors.

ALTHERM is a brand of APL, the largest window solutions organisation in New Zealand.  We offer a diverse range of products, including METRO SERIES, APL ARCHITECTURAL SERIES, ThermalHEART technology, SMARTWOOD and diverse commercial suites. We also have MIRO, ICON and URBO which are exclusive hardware ranges with an integrated look.