Vogel's PPC 1540 Silver Ceiling Mount Projector - Silver (400-500mm version)

Very sturdy and high quality projector mount.

The PPC 1540 is a height-adjustable projector mount designed specifically for the latest generation of projectors weighing up to 15 kg. This projector interface is fine-tuned for precise alignment with the projection surface. Once aligned, the projector stays in place. Turning the unique friction ring eliminates all games from the interface connections, making the mount a solid and very stable solution. The height adjustable projector ceiling mount kits can be used when the height of the ceiling is not known or when flexibility is desired. These brackets are available in 3 lengths and offer variable height adjustment from 400 to 550 mm. The Cable Inlay System runs the entire length of the pole and even allows cable routing after installation.

More info:
https://www.vogels.com/en/p/ppc-1540-projector-ceiling-mount-silver
https://amzn.eu/d/jlIwcUf