During storage and operation, direct sunlight is not allowed.
This is indicated by the corresponding icon on the door packaging.
It is forbidden to use doors either as entrance ones (including as the second “vestibule” doors) or outside buildings and structures.The doors should be stored in closed warehouses away from heaters in a horizontal position (on a flat surface) in compliance with conditions that exclude the impact of sunlight.
Storing the door in standing position, at an angle, or using linings and gaskets is a quite bad practice. Since the door leaf can bend and deform under its own weight.
When stored on pallets, the pallet size should correspond to the door size (the door “hang-down” is not allowed for more than 5 cm on each side).