What is special about this picture lock is that it is locked with a special key in the centre hole of the base element - either at the top, bottom or in both centre holes. To ensure best possible locking, we recommend using it in the bottom centre hole and using picture hooks or similar in the two hanging holes at the top.
Suitable for Classic, Distance, B1 and Conservo Magnetic Frames. For Protect Magnetic Frames there is a special version of the picture lock BS 4.
Picture lock BS 4 - quickly explained in the video: