It’s a sliding and folding door:
Bi-Fold Doors gives you the option to open up a whole
wall or open up two corners or even a balcony. The doors can be stacked open at one
end, or at both ends, or one panel can be opened like a conventional single back
door or a pair of patio doors. You can choose the same colour for both sides, or
have a different colour for the side that faces into your room.
FEATURES
· Aluminium construction - very low maintenance, no painting, no warping, no shrinking
· Security locking system
· Option of Inward or Outward opening doors
· Weather rating and thermally efficient
· Low threshold option for easy access
How do Bi-Fold Doors work? The system is built up using a frame in which movable
parts or elements are placed in such a way that it is possible to fold up the elements
to the left or right. These elements or sashes are supported and hinged to a mullion.
At the bottom the mullion is supported by a roller mechanism which slides along the
cill profile while at the top, the mullion is guided by another roller mechanism.
There are many possible combinations of elements and opening schemes.
