Front door threshold strip where can I get one of this type in the photo

[Baileys20]

Hello,

It’s for an external front door and I am looking for the upright bit with the black strip in the photo, that is attached to the base plate. Any information on what it is specifically called, or where I can get one from would be fantastic.

Thanks

Draught excluder. Possibly like this one:
www.screwfix.com/p/stormguard-heavy-duty-around-door-strips-aluminium-1-02m-5-pack/21554

Great, thanks!