In the process of modernization many things were upgraded for example the tram received new doors and new front and rear plastic walls with rectangular headlights.

The overall exterior design is changed, including the removal of one of the doors in each carriage.

The rear car has more seating than the front due to the lack of a driver's cabin.

Today, the tram is often mistaken as the Protram 204WrAs, since it looks roughly the same.

Another tram that is recognized by the people to be a modernized version of the Konstal 105Na is the Protram 205WrAs.