Door fittings for large-scale model helicopters do not differ fundamentally from one type to another. However, the size of these accessories is important if the model is to look convincing, otherwise they will look out of scale.
Compare the door handle of the Lama with that of the Alouette II, and the difference is obvious.
The door fittings set for the Lama contains all the accessories you require for the cabin doors, including the hinges and screws.