A bi-fold shower door has the luxury of being able to work with shower enclosures that are both recessed and fully enclosed with panels. ... The door is essentially split into two allowing it to concertina within the showering area, thus reducing the amount of clearance space required outside of the shower enclosure. Our range of bi-fold doors is ideal for when space is at a premium. The Bi-fold Shower Doors are available in a range of size options to make the most of your space.