Shop for Sash Jammers for your UPVC windows or doors. Sash jammers provide additional security for your home, and are an easy and inexpensive way of securing your doors and windows. They fit onto the door or window frame, and have a handle which can be secured against the door or window, preventing opening. They are especially useful as a safety measure for young children, preventing them from opening doors or windows unsupervised. We have a team of friendly, expert staff who can help with choosing, measuring or fitting any of our products. Visit our technical help page to find the different ways of contacting us with any query.