Surface-mounted design
The system installs on the wall surface around the opening rather than relying on the rough opening for its door size.
The BiFold Bookcase Door mounts to the face of the wall, folds into two bookcase panels, and opens a wide passage through the existing finished doorway.
Unlike a standard pre-hung hidden door, the BiFold system is sized to cover the finished doorway and is supported by a top mounting system. Its two connected bookcase panels fold together as the entrance opens.
The system installs on the wall surface around the opening rather than relying on the rough opening for its door size.
The panels fold out of the doorway, making BiFold a strong option when preserving usable opening width is a priority.
The visible real-wood bookcase provides display storage while concealing the doorway it covers.
Current product options may include size, material, finish, backing, trim, shelving, and compatible hardware selections.
The finished opening supplies the ordering dimensions, but the complete BiFold assembly occupies more wall area than that opening. Confirm every required area before purchasing.
BiFold prioritizes surface mounting and clear passage. Compare the project conditions below before choosing it over a Single, Double, or Alpha hidden door.
The two views make the operating concept easier to understand: the bookcase covers the doorway when closed and folds together outside the opening when opened.


These answers summarize the current planning guide. The product configuration and complete measuring instructions control the final available options and required dimensions.
Read full technical information →Use the product page to select the current size and options. If the ceiling or side clearances are close, contact a hidden-door specialist before ordering.