This is the final episode where Schwoz appears as a recurring character.
This episode was produced from December 11 to December 15 of 2017.
This is the last episode produced for season 4, the cast had a wrap party on December 16 .
This episode was one of the hardest episodes to film because the crew members had to keep track of which floor Henry and Ray were on and switch out the floor numbers according to what floor they were on.
The title is a reference to the recurring phrase, "up the tube!"