DS255U | Narrow Sliding Window Restrictor

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$18.30 inc. GST

The DS255U is a Sliding Window Limiter Lock designed for windows with a narrow track. These windows are often found in dwellings pre 1985.

A unique feature of the DS255U is an in-built anti lift block, incorporates four positions of adjustment that can be adjusted to stop the window from lifting.

Another innovative feature of the DS255U is the key operated removable body that can be removed for emergency egress and cleaning purpose.

Once installed the device restricts the window from opening at a distance pre-determined by the installer.

Narrow construction suitable for older narrow window tracks.

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  • In built anti lift block
  • Enables sliding windows to be restricted at a distance pre-determined by the installer
  • Key lockable – For safe removal of the device
  • Easy to install


  • Sliding Windows where channel size is less than 19mm wide
  • Ideal for Windows manufactured before 1985
  • Established dwellings that require window restriction