Unfortunately, we do not have the actual vendor for this shower door on file but was able to find a similar shower door option on Wayfair, please see below:
Coastal shower doors makes the Gridscape series, which are true divided lights. The ones from Wayfair have tape on the glass to imitate divided lights and come in a pretty short height. Coastal's are taller but are quite expensive.
Armstrong Flooring
Hillcrest Glass
Mana Amir