Shower door magnetic strip and sweep
I'm afraid that we won't be able to supply you with a magnetic strip for your shower door. For that, I would recommend getting in touch with the original manufacturer.
We can help with the bottom sweep, if you were interested. It looks like you use a sweep with a drip rail, so I recommend something like our 10-324, 10-325, or 10-326 depending on what length you need. These come with pre-made screw holes but there's a good chance they won't match up with the holes in your door. You'll have to redrill holes int he new sweeps to get them to match. If you aren't comfortable with drilling, you could also use double stick tape to install them. Double stick tape is available at any hardware store near you.