The large main door typically has a smaller entrance door (or doors) cut into it. In contrast to the houses of the same period in Havana the door tends to open directly onto a living area, rather than having a vestibule or entrance hall. The doors are often surrounded by architectural plaster mouldings. Windows lack glass, instead they are open to the elements, but have "barrotes", bars constructed of small turned wooden columns which allow the air to circulate without allowing entrance to the house. In the 19th century these wooden barriers were replaced by wooden shutters behind a wrought-iron grille.