Designed for corner cabinets in a kitchen (often times there is a lazy susan behind the door). For this type of bi-fold door one door is attached to the cabinet frame and the other door is attached to the first door. This is the hinge that attaches the two doors together. This hinge is the new version of Blum's Pie Cut Corner or Bi-Fold Door hinge. To view Blum's Old Style Bi-Fold Door Hinge see the document found under Downloads. This new style hinge is functionally identical to the Old Style hinge. Maximum opening is 60 degrees. Three dimensional adjustment. IMPORTANT: This hinge is made up of two parts; the hinge (SKU 268174) and a mounting plate (SKU 652304), which is ordered separately. PLEASE NOTE: This hinge will not replace other brands of hinges because the hole that the hinge fits into is a partial hole (negative bore distance).