It is very important to pay attention to 3 Killings since 3 Killings cause 3 types of misfortune - loss of wealth, loss of loved and loss of fame.
3 Killings are located in North position. So you can display such Ksitigarbha with 3 Celestial Protectors in this location to lower the effect generated by 3 killings.
The dimension of each statue is approx. 3" x 1 3/8" x 3". The one with Ksitigarbha is approx. 4" in the height. They are heavy.