What is the 'maximum occupancy' of this room? [=what is the largest number of people who can legally be in this room at the same time?]
a 'maximum security prison' [=a prison that does as much as possible to keep prisoners from escaping and watches them very closely]
She will serve 20 years 'maximum' in jail. [=she will not serve more than 20 years in jail]
(..) You take it. - What are you up at, six? - Send it all in. - Axel, we got limits. - You tryin' to snap my rhythm? - Two dime maximum. - I just played three. You wasn't supposed to play no three! Two thousand. No more. - It's for your own protection. - Fuck my protection! (..)1974 The Gambler