Adjustable anti-theft hangers

‘Lock’ hangers can be screwed into the back of artwork instead of traditional strap hangers or d-ring hangers. They do not need wall hooks but rather, just a screw onto which they slot.
When compared to a traditional strap hanger and its wall hook, a Lock 6 or Lock 8 hanger takes up less space behind the artwork (5 mm to 8 mm) and can be used to continuously and finely adjust the height of the artwork.

A hidden anti-theft device is included in each hanger.
French patent.

The weights indicated are based on tests conducted by Chassitech on a traction bench in near-real life conditions. They include a wide safety margin, but these are for indicative purposes. The load resistance depends very much on the quality of fastenings both on the object and in the wall.