Spire Glass

Altegra Window & Door Systems supplied Spire Glass with a in-line triple track Cortizo 4700 sliding door system and flush casement window system for an install near Salisbury. The 4700 sliding door is a high-performance aluminium system designed for large glass surfaces and providing maximum natural light. It features a highperformance thermal break, which helps to reduce heat loss and improve energy efficiency. 

The system is characterised by its slim profile, which allows for maximum glass surface and minimal visual obstruction. It has a sash weight capacity of up to 280 kg, and it can accommodate glass thickness' of up to 36 mm. The 4700 Sliding Door System is available in a variety of configurations, including two, three, four, and six-panel systems, with options for both fixed and sliding panels.

In terms of security, the 4700 Sliding Door System is PAS24 compliant, which provides superior protection against forced entry and was installed with Coastal pull handles. The system was finished in our standard dual colours of anthracite grey and white. This system is also available in a vast range of RAL 
colours.

The flush Cortizo Casement Window system installed is a highly efficient, with a thermal break zone of 32 mm and a transmittance Uw from 1,0 W/ m²K.