Easy to fit and operate, sash jammers can be used on both uPVC windows and doors.
See these here: https://www.homesecureshop.co.uk/security-c67/window-door-security-c68/sash-jammers-c79
White Finish
Can be deadlocked with key supplied
Can be fitted to a window or door to provide additional security
1 Packers & 3 different sized button spacers provided to ensure a stylish fit onto different profiles
uPVC Screws provided for use with reinforced windows
We recommend using Jack Nuts to gain a secure fit onto un-reinforced window frames
You won't know if frame is re-inforced until you drill a pilot hole and feel tension or lack of tension
