The fact that the main heat loss (about 30%) occur through the doors, everyone knows. The reason for this, as a rule, is the gap in the doorway, as well as the loose fit of the metal doors to the door box.
The fact that the main heat loss (about 30%) occur through the doors, everyone knows. The reason for this, as a rule, is the gap in the doorway, as well as the loose fit of the metal doors to the door box.
