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.

Vertical Sliding Windows

First offers two types of vertical sliding windows, aluminium and glass (Shugg). Our aluminium vertical sliding windows offer choice in the surrounding frame – one with a scrolled Edwardian appearance (often found in character homes) and the other with a clean, flat face for a more contemporary look. The single-glazed Shugg slider features two panes of glass which slide past each other with no aluminium rails in view.


W vertical