What are these boxed doors outside store fronts in New York?





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In New York around lower Manhattan I saw some storefronts with these boxed doors outside.

What are they called and what is their function?





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  • Many other towns have these built right into the building. In the suburban midwest you must always go through 2 doors to get into a Mcdonalds, Starbucks, Wendys, Trader Joes, etc.

    – Harper
    3 hours ago


















7















In New York around lower Manhattan I saw some storefronts with these boxed doors outside.

What are they called and what is their function?





enter image description here










share|improve this question







New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





















  • Many other towns have these built right into the building. In the suburban midwest you must always go through 2 doors to get into a Mcdonalds, Starbucks, Wendys, Trader Joes, etc.

    – Harper
    3 hours ago














7












7








7








In New York around lower Manhattan I saw some storefronts with these boxed doors outside.

What are they called and what is their function?





enter image description here










share|improve this question







New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












In New York around lower Manhattan I saw some storefronts with these boxed doors outside.

What are they called and what is their function?





enter image description here







new-york-city identify-this






share|improve this question







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  • Many other towns have these built right into the building. In the suburban midwest you must always go through 2 doors to get into a Mcdonalds, Starbucks, Wendys, Trader Joes, etc.

    – Harper
    3 hours ago



















  • Many other towns have these built right into the building. In the suburban midwest you must always go through 2 doors to get into a Mcdonalds, Starbucks, Wendys, Trader Joes, etc.

    – Harper
    3 hours ago

















Many other towns have these built right into the building. In the suburban midwest you must always go through 2 doors to get into a Mcdonalds, Starbucks, Wendys, Trader Joes, etc.

– Harper
3 hours ago





Many other towns have these built right into the building. In the suburban midwest you must always go through 2 doors to get into a Mcdonalds, Starbucks, Wendys, Trader Joes, etc.

– Harper
3 hours ago










2 Answers
2






active

oldest

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13














That is a sidewalk vestibule. The idea is to have an extra door between the building's interior and the outside, so as to reduce the amount of air exchanged when people go in and out. In winter, warm air stays inside and cold air stays outside, reducing the building's heating costs and avoiding uncomfortable drafts for diners sitting near the door.



You could also have a vestibule inside the restaurant's regular doors, but that would occupy valuable floor space, and would be useless during warmer seasons. The temporary vestibule can be put up in winter and taken down in summer.






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  • 1





    It has something to do with keeping flying insects outside as well.

    – Nean Der Thal
    5 hours ago











  • In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

    – Nate Eldredge
    2 hours ago



















4














While I do not know what they are called, their purpose is to keep heat inside by creating an extra air chamber between the inside which is heated and the outside. These are usually removed in the warmer months.






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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    13














    That is a sidewalk vestibule. The idea is to have an extra door between the building's interior and the outside, so as to reduce the amount of air exchanged when people go in and out. In winter, warm air stays inside and cold air stays outside, reducing the building's heating costs and avoiding uncomfortable drafts for diners sitting near the door.



    You could also have a vestibule inside the restaurant's regular doors, but that would occupy valuable floor space, and would be useless during warmer seasons. The temporary vestibule can be put up in winter and taken down in summer.






    share|improve this answer



















    • 1





      It has something to do with keeping flying insects outside as well.

      – Nean Der Thal
      5 hours ago











    • In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

      – Nate Eldredge
      2 hours ago
















    13














    That is a sidewalk vestibule. The idea is to have an extra door between the building's interior and the outside, so as to reduce the amount of air exchanged when people go in and out. In winter, warm air stays inside and cold air stays outside, reducing the building's heating costs and avoiding uncomfortable drafts for diners sitting near the door.



    You could also have a vestibule inside the restaurant's regular doors, but that would occupy valuable floor space, and would be useless during warmer seasons. The temporary vestibule can be put up in winter and taken down in summer.






    share|improve this answer



















    • 1





      It has something to do with keeping flying insects outside as well.

      – Nean Der Thal
      5 hours ago











    • In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

      – Nate Eldredge
      2 hours ago














    13












    13








    13







    That is a sidewalk vestibule. The idea is to have an extra door between the building's interior and the outside, so as to reduce the amount of air exchanged when people go in and out. In winter, warm air stays inside and cold air stays outside, reducing the building's heating costs and avoiding uncomfortable drafts for diners sitting near the door.



    You could also have a vestibule inside the restaurant's regular doors, but that would occupy valuable floor space, and would be useless during warmer seasons. The temporary vestibule can be put up in winter and taken down in summer.






    share|improve this answer













    That is a sidewalk vestibule. The idea is to have an extra door between the building's interior and the outside, so as to reduce the amount of air exchanged when people go in and out. In winter, warm air stays inside and cold air stays outside, reducing the building's heating costs and avoiding uncomfortable drafts for diners sitting near the door.



    You could also have a vestibule inside the restaurant's regular doors, but that would occupy valuable floor space, and would be useless during warmer seasons. The temporary vestibule can be put up in winter and taken down in summer.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 6 hours ago









    Nate EldredgeNate Eldredge

    23.8k884109




    23.8k884109








    • 1





      It has something to do with keeping flying insects outside as well.

      – Nean Der Thal
      5 hours ago











    • In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

      – Nate Eldredge
      2 hours ago














    • 1





      It has something to do with keeping flying insects outside as well.

      – Nean Der Thal
      5 hours ago











    • In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

      – Nate Eldredge
      2 hours ago








    1




    1





    It has something to do with keeping flying insects outside as well.

    – Nean Der Thal
    5 hours ago





    It has something to do with keeping flying insects outside as well.

    – Nean Der Thal
    5 hours ago













    In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

    – Nate Eldredge
    2 hours ago





    In general, perhaps. In New York City, not so much - as the article points out, they are used primarily in winter, when flying insects are not found outdoors.

    – Nate Eldredge
    2 hours ago













    4














    While I do not know what they are called, their purpose is to keep heat inside by creating an extra air chamber between the inside which is heated and the outside. These are usually removed in the warmer months.






    share|improve this answer




























      4














      While I do not know what they are called, their purpose is to keep heat inside by creating an extra air chamber between the inside which is heated and the outside. These are usually removed in the warmer months.






      share|improve this answer


























        4












        4








        4







        While I do not know what they are called, their purpose is to keep heat inside by creating an extra air chamber between the inside which is heated and the outside. These are usually removed in the warmer months.






        share|improve this answer













        While I do not know what they are called, their purpose is to keep heat inside by creating an extra air chamber between the inside which is heated and the outside. These are usually removed in the warmer months.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 6 hours ago









        ItaiItai

        30.1k972158




        30.1k972158






















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