We like to think of the Hovr Bracket system as the next step in the evolution of the French Cleat. A tried and true classic, but with limitations, the French Cleat uses a similar system but with higher woodworking investment, some limitations due to materials, and without the security of the set screw feature that locks the Hovr Brackets together. Below you can see a basic demonstration of the standard French Cleat concept:
As you can see in the the above image, a simple bump from below could send the fixture tumbling from the wall. The Hovr Bracket System evolves this concept by adding additional features like the set screw. This is why we always recommend you use the provided set screws (and/or glue) to lock the brackets together. We always recommend the set screws as they can be easily removed, whereas glue is a more permanent solution.
If you do not use glue OR set screws and whatever you attach to it does not have sufficient weight to ensure no one can lift it or make it jump up, it will come off. In essence, the Hovr bracket system is a supercharged french cleat, and still needs to be secured one way or another.
You can learn more about the set screws in the following articles:
Do I need to use set screws?
Do I always need to use the same size of set screws?
How to make set screw holes and taps
Or you can learn more about how to glue the aluminum Hovr bracket system below:
Can I glue the male and female brackets together? How?
How to glue aluminum