Shower Door Replacement Parts Replacement For Rubber Threshhold On Frameless Glass Shower Door.?

Replacement for rubber threshhold on frameless glass shower door.? - shower door replacement parts

The threshold of gum in my frameless glass shower door is leaking. When I removed, I could see this is part of the rubber and needs to be replaced. We do not buy the new house if you do not know the manufacturer. We live in Chicago. Suggestions?