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WP25920 Restrictor

Double Hung Window Restrictor

The WP25920 Double Hung Window Restrictor is Cowdroy’s latest addition to their comprehesive range of devices designed for window restriction. The WP25920 is designed specifically for use on residential double hung windows.

The device is an innovative way to restrict both the top and bottom windows from moving to a distance pre-determined by the installer.

The WP25920 includes a key operated removable body that can be easily removed for the purpose of cleaning.


  • Innovative way of restricting a double hung window
  • Able to be keyed alike to suit other Doric locking devices
  • Does not interfere with the windows balance mechanisms
  • Easy to install
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