Open-section accommodation thumb|upright=1.2|Open section accommodations of a Pullman car in day mode from . thumb|upright=1.2|In 1964, aging open-section Pullman cars waited in Portland, Oregon, available for "emergencies". From the mid-19th to the mid-20th centuries, the most common and more economical type of sleeping car accommodation on North American trains was the "open section". Open-section accommodations consist of pairs of seats, one seat facing forward and the other backward, situated on either side of a center aisle. The seat pairs can be converted into the combination of an upper and a lower "berth", each berth consisting of a bed screened from the aisle by a curtain. A famous example of open sections can be seen in the movie Some Like It Hot (1959). thumb|upright=1.2|NH RR's 1942 World War II advertisement "The Kid in Upper 4." This ad depicts an open section of a sleeping car.
Open-section accommodation thumb|upright=1.2|Open section accommodations of a Pullman car in day mode from . thumb|upright=1.2|In 1964, aging open-section Pullman cars waited in Portland, Oregon, available for "emergencies". From the mid-19th to the mid-20th centuries the most common and more economical type of sleeping car accommodation on North American trains was the "open section". Open-section accommodations consist of pairs of seats, one seat facing forward and the other backward, situated on either side of a center aisle. The seat pairs can be converted into the combination of an upper and a lower "berth", each berth consisting of a bed screened from the aisle by a curtain. A famous example of open sections can be seen in the movie Some Like It Hot (1959). thumb|upright=1.2|NH RR's 1942 World War II advertisement "The Kid in Upper 4." This ad depicts an open section of a sleeping car.