These are bi folding patio doors. Also called folding-sliding doors, they are hinged together, concertina style. Basically, doors either pivot - as in French Doors - or they can slide ...
or both.
Fixed panel sliding doors have to remain within the top and bottom guides, restricting the access through the aperture, but SunSeeker Doors' Frameless Glass Doors slide along the guides then each can pivot to make the entire aperture accessible.
Take a look at our patio doors, glass curtains and room dividers on the SunSeeker Doors website.
