New Elite Core BLANK Recessed Metal Floor Box (FB & FBL Series) MSRP: Was: Now: $80.99 - $98.99 Quick OverviewSturdy metal floor box with hinged access. Used for Microphone Connections, great for theaters, churches, schools, etc. Recessed floor boxes are constructed from heavy-duty steel and feature a hinged door with cable pass-though slots... Choose Options