Altherm Window Systems

Drawing on more than 30 years of experience in the market, First Windows & Doors has developed a high-performing range of solutions for all homes, from entrance doors to windows, sliders, bi-folds and thermally efficient options.Choose your windows, doors and hardware from one of our ranges or mix and match to suit your project – it's your build, your way, with First Windows & Doors. First Windows & Doors is a brand of APL, the largest window solutions organisation in New Zealand.