Legal Lateral or Legal Front to Back Letter Lateral or Letter Front to Back Must specify placement of lock left-side or right-side facing. FC-50 features a finished back so that it can float in a room. The BC-51 bookcase, 56"h is made to sit on top of the FC-50 lateral file cabinet. May be fabricated with placement and style of handles to match both BC-82 (A & B) and BC-83 (A & B).