Multifamily Apartment Entry Doors

[Joshua Morgan]

What are your recommendations for replacing the entry door to an apartment unit within a small multifamily, such as a typical 4-plex? The entry door to the unit is off an interior hallway, not the outside.

Seems like a steel exterior door with threshold is overkill, while an interior solid-core door has a reasonably large gap at the bottom?

What do you replace your interior apartment entry doors with?

[Anthony Dooley]

There should be a gap under interior doors, but weather stripping is an option.