Key lockable window restrictor with a 5 disc locking barrel and 16 strands of high tensile stainless-steel cable. Can hold a force of 34st. Restricts windows from opening further than 100mm, with the option to open windows fully with a key when required. Suitable for use in domestic and commercial environments. Compatible with most window sizes and types, including uPVC, timber, and aluminium frames. Supplied with one key. Suitable for Windows & Doors Aluminium & Zinc Construction Left or Right-Handed Horizontal or Vertical Fitting 5 Disc Locking Barrel Grade 4 Security Screws Suitable for All Window Opening Types Suitable for Windows & Doors Aluminium & Zinc Construction Left or Right-Handed Horizontal or Vertical Fitting 5 Disc Locking Barrel Grade 4 Security Screws Suitable for All Window Opening Types