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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  • 2





    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
    yesterday











  • The same in Sweden. In some buildings, the inner door won't open before the outer door is closed (in particular with automatic sliding doors).

    – gerrit
    19 hours ago











  • An interesting point is, I've never known what these are called! People just call them "the double door thingy that you add on in winter".

    – Fattie
    4 hours ago


















27















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.
















  • 2





    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
    yesterday











  • The same in Sweden. In some buildings, the inner door won't open before the outer door is closed (in particular with automatic sliding doors).

    – gerrit
    19 hours ago











  • An interesting point is, I've never known what these are called! People just call them "the double door thingy that you add on in winter".

    – Fattie
    4 hours ago














27












27








27


1






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







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.











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.









share|improve this question




share|improve this question






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Check out our Code of Conduct.









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Check out our Code of Conduct.






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Check out our Code of Conduct.








  • 2





    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
    yesterday











  • The same in Sweden. In some buildings, the inner door won't open before the outer door is closed (in particular with automatic sliding doors).

    – gerrit
    19 hours ago











  • An interesting point is, I've never known what these are called! People just call them "the double door thingy that you add on in winter".

    – Fattie
    4 hours ago














  • 2





    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
    yesterday











  • The same in Sweden. In some buildings, the inner door won't open before the outer door is closed (in particular with automatic sliding doors).

    – gerrit
    19 hours ago











  • An interesting point is, I've never known what these are called! People just call them "the double door thingy that you add on in winter".

    – Fattie
    4 hours ago








2




2





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
yesterday





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
yesterday













The same in Sweden. In some buildings, the inner door won't open before the outer door is closed (in particular with automatic sliding doors).

– gerrit
19 hours ago





The same in Sweden. In some buildings, the inner door won't open before the outer door is closed (in particular with automatic sliding doors).

– gerrit
19 hours ago













An interesting point is, I've never known what these are called! People just call them "the double door thingy that you add on in winter".

– Fattie
4 hours ago





An interesting point is, I've never known what these are called! People just call them "the double door thingy that you add on in winter".

– Fattie
4 hours ago










2 Answers
2






active

oldest

votes


















41














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
    yesterday






  • 8





    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
    yesterday






  • 3





    @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

    – chrylis
    7 hours ago






  • 2





    @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

    – chrylis
    7 hours ago






  • 2





    As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

    – Zach Lipton
    5 hours ago



















9














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
























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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    41














    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
      yesterday






    • 8





      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
      yesterday






    • 3





      @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

      – chrylis
      7 hours ago






    • 2





      @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

      – chrylis
      7 hours ago






    • 2





      As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

      – Zach Lipton
      5 hours ago
















    41














    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
      yesterday






    • 8





      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
      yesterday






    • 3





      @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

      – chrylis
      7 hours ago






    • 2





      @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

      – chrylis
      7 hours ago






    • 2





      As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

      – Zach Lipton
      5 hours ago














    41












    41








    41







    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 yesterday









    Nate EldredgeNate Eldredge

    23.9k886109




    23.9k886109








    • 1





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

      – Nean Der Thal
      yesterday






    • 8





      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
      yesterday






    • 3





      @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

      – chrylis
      7 hours ago






    • 2





      @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

      – chrylis
      7 hours ago






    • 2





      As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

      – Zach Lipton
      5 hours ago














    • 1





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

      – Nean Der Thal
      yesterday






    • 8





      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
      yesterday






    • 3





      @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

      – chrylis
      7 hours ago






    • 2





      @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

      – chrylis
      7 hours ago






    • 2





      As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

      – Zach Lipton
      5 hours ago








    1




    1





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

    – Nean Der Thal
    yesterday





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

    – Nean Der Thal
    yesterday




    8




    8





    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
    yesterday





    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
    yesterday




    3




    3





    @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

    – chrylis
    7 hours ago





    @WGroleau In that case, it's called a mantrap and is usually built much more sturdily.

    – chrylis
    7 hours ago




    2




    2





    @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

    – chrylis
    7 hours ago





    @Tetsujin NYC has plenty of bureaucracy, and I'm sure that there are fire rules for how these must be constructed (e.g., the external door still opens outward into the street, etc.).

    – chrylis
    7 hours ago




    2




    2





    As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

    – Zach Lipton
    5 hours ago





    As the article points out, it is surprising the NYC allows them at all just from the standpoint of sidewalk obstructions. Most cities don't allow businesses to just expand their entryway into the public sidewalk, and NYC does have plenty of bureaucracy. This just happens to be something they don't care about.

    – Zach Lipton
    5 hours ago













    9














    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




























      9














      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


























        9












        9








        9







        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 yesterday









        ItaiItai

        30.2k972158




        30.2k972158






















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