Altera manufactures high performance, energy efficient uPVC windows and doors as part of the Infinity, Contemporary, Vienna, Element and Fusion Series.
We offer a full product line of Windows and Doors which include Tilt-Turn windows, Casement windows, Picture windows, Awning windows, Single Hung windows, Double Hung windows, Tilt-Slide doors, Hinged doors, ADA Compliant DP Rated French doors and Sliding doors; all in residential and commercial architectural styles.