Development in entrance protection eliminates mechanical doors, except for night service or emergency, and allows constant accident free flow of pedestrian or rolling traffic; hermetically sealed entrance is said to be practical for buildings where heavy traffic exists; industrial uses such as sealing freezer rooms having below zero F on inside or 60 to 100 F on outside and separating spaces with different temperatures.


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    Titel :

    Entrances are sealed behind air curtain


    Weitere Titelangaben:

    Refrig Eng


    Erschienen in:

    Erscheinungsdatum :

    1956


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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