Box Sash Window

Traditional box sash sliding windows are the enduring design of Georgian houses, Victorian villas and Edwardian homes.

Lignum Box Sash Windows offer an authentic conservation replacement to retain the traditional features of a period property renovation. This vertical sliding sash window provides excellent energy efficiency and security performance.

The system is part of a registered Secured by Design scheme.

Features and benefits:

• PAS 24:2016 security.
• 1.3 W/m²K U-value double-glazed.
• Document L, Document M and Document Q compliant.
• Tested to BS 6375-1.
• Double, triple or vacuum glazing.