Pre-stretched Nylon Sash Cord is exactly what it says, we pre-stretch it so it doesnt stretch when its fitted. Tough and durable, a perfect replacement or alternative to traditional waxed cord.

• White nylon cord suitable for traditional or contemporary settings
• Stronger and more durable than waxed cotton with a longer life span
• Ideal for single, double or triple glazed glazed sash windows
• Maximum sash weight 6mm Diameter 120lb  (54.4 Kg)*
• Maximum sash weight 7mm Diameter 170lb (77.05kg)*
• Maximum sash weight 8mm Diameter 220lb (99.7 Kg)*

* Assumes sash is corded up on both sides