Folding doors are manufactured in Ponzio's PE68 and PE78 aluminum system. They are offered in low-threshold or standard variants. They are an interesting alternative to sliding doors. Due to their design, they allow almost complete opening of the space for the room in which they are installed. Once they are opened, there are virtually no usable restrictions. The configuration of the division of folding doors is selected individually, depending on the dimension in which the structure is to be installed and technological possibilities. We are able to make folding doors up to 6.5 meters wide in one structure. We are able to make accordion doors in full color from the RAL palette and available wood-like colors.