The three main areas of strength
A Sash Jammer or sash blocking device are the riveting of the arm, the strength and construction of the casting and the fixings themselves. Poor riveting on many Chinese sash jammers create weakness in the fixing Tof the arm to the base. low-grade or recycled zinc used creates porosity in the casting and makes them brittle and easy to break. The quality of the screws and fixing is critical to ensure that the sash jammer does not get ripped off the door or window under attack.
How to fit a sash jammer
Sash Jammers are easy to fit but heres a quick guide below to help.
Sash Jammer Advice
We can provide them as individual items or
with full fitting kits. Our tests have shown
that the full kit with the correct screws, jack
nuts and packers will provide maximum security.
The sash jammer is non-handed and can be
fitted in minutes to any window or door,
opening in or out.
Download a Free Fitting Guide