The highest penthouse level is numbered as the 21st floor.

A man in a dark blue suit held open the door to the penthouse level and checked their badges.

His own team would take the north wing in a moment, ride up to the penthouse level and begin their killing at the top.

In addition, there will be two duplexes not at the penthouse level that are $2.575 million each.

Floors 19, 20, and 21 are sub-penthouse levels with floor 22 being the penthouse level.

It was at the penthouse level, the only top floor apartment served by the elevator, which had an operator, instead of being the automatic type.

The second penthouse level and roof top are not accessible to the public.

The blank wall of a warehouse rose just above the penthouse level, with only a short space between.

The penthouse level would become a modest health area, with exercise equipment and a sun deck.

Then jogging the stairs up to the penthouse level.