In the first episode Andy's office was in Suite 210. In the beginning of this episode, he and Jenny step outside and the number 207 is seen over his office door. When Andy and Simon return to the office that night there are no numbers above the door.
Simon: (Laughing)You were so scared back there, you were like, they're following us Simon please hold me.(Andy points to a car)Oh my god it's the same car.
Andy: Got to get back to see if Jenny's alright.
When Simon rescues Lou from the chicken he shoos it into the warehouse and closes the doors which say Slaughter Room 5 alluding to The the 1969 book Slaughterhouse 5 by Kurt Vonnegut.