Various alterations can be made in any model, most of which are only done in the factory (T), but some can be also performed by client (K):
»  to replace door hinges to the right-hand side (T);
»  stove reverse models on request (T);
»  to change colour of stove: black or red (T);
»  to order upper edge of metal casing from stainless steel (T or K);
»  to order tank from stainless steel for stove with tank (T);
»  to make longer or shorter wall-penetrating part of stove (T);
»  to order two-side connection of tank (T);
»  to replace metal stove doors with doors made from thermal glass (K);
»  to order stove from thicker material (T);