The Sash Jammer is ideal additional security for PVCU windows. It is simple to operate and easy to fit, and is non-handed for use on all applications It is available as a standard product or with a key lock to secure the arm in place when the window is closed If the home is unoccupied for any length of time the key lock is ideal to ensure the windows are completely protected The Sash Jammer can also be fitted to a door, to provide excellent additional security Interior