I needed a hook to keep my front door open - otherwise it keeps swinging halfway closed. The railing on the side provided a good anchor point for a quick and dirty clip on design. Works perfectly.

The opening for the bar is 30 mm x 9 mm. Proved to be a little tight with the thick layers of paint however.
The free length of the hook is 157 mm.

Hope somebody can use this model or at least the inspiration.