T88-FBB(I) Interlock Window Sash (27.5×42.5) is an aluminium interlock sash profile designed to join sliding window panels securely while maintaining smooth operation and stability.

Specification
• 27.5 mm → Sash width/thickness
• 42.5 mm → Profile depth/size
• Designed for interlocking sliding window panels
• Provides strong joint support between shutters
• Ensures smooth and stable sliding performance
• Improves overall structural strength of the window system