What do the following phrases have in common?

KING'S THRONE
BREAKS EVEN
NET WEIGHT
EXIT AT MEZZANINE
FAIRLY OFTEN

Answers:

Each phrase ends with a three, four, or five-letter number:

thrONE
breakS EVEN
net wEIGHT
mezzaNINE
ofTEN

Credit:
LA Times Crossword
October 19, 2016
Bruce Haight
CLOSING NUMBER