"Third floor. Wrong apartment." - Leonard Hofstadter

Apartment 3A

Apartment 3A is a room in the the apartment building that is not owned by anyone and is completely empty in Season 10. 


  • In "The Gyroscopic Collapse", the military takes away Sheldon, Leonard and Howard's guidance system and leaves the room they work in bare to the floor, the trio accidently walks into Apartment 3A and freaks out because they thought the military also cleared out Sheldon and Leonard's apartment.
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