C2 Secondary Unit Designators

Description		Approved Abbreviation
Apartment		APT
Basement		BSMT**
Blank, unable to determine*
Building		BLDG
Department		DEPT
Floor		FL
Front		FRNT**
Hanger		HNGR
Key		KEY
Lobby		LBBY**
Lot		LOT
Lower		LOWR**
Office		OFC**
Penthouse		PH**
Pier		PIER
Rear		REAR**
Room		RM
Side		SIDE**
Slip		SLIP
Space		SPC
Stop		STOP
Suite		STE
Trailer		TRLR
Unit		UNIT
Upper		UPPR**
* Requires the pound sign (#) to be used on the mailpiece. ** Does not require a Secondary RANGE to follow.