Screw on Fly Screen Catch / Clip - Parameterized

I designed this clip to replace broken ones on my screens, which I could not find locally to buy.

It is a general purpose screw on clip, that can hold timber/aluminium screens in place.
The extrusion flexes so that the screen can come in/out with some slight pressure.

Please refer to the attached images for the meanings of the configuration parameters.
These are easy to change to make a clip that precisely suits the thickness of your screen and the gap between your screen and the casement.