First windows are strong and generously sized to ensure function and style in a wide range of homes and situations. Available with ThermalHeart technology in the Residential and Metro series for maximum thermal efficiency. There are upgrade ranges to meet the need for large ‘architectural’ sizes.

Bi-fold Windows

First bi-folds are a popular choice when designers or home-owners want to combine wide opening to expansive views with maximum airflow. First bi-folds run on an easy-glide track system. Because bi-folds project outwards, carefully consider their use beside decks or walkways. First bi-folds are normally made in multiples of even numbers, such as two, four or six panels.


  W Bifold