10.2.5.10. Windows located in the rooms prescribed in subparagraphs 1 to 3, 5, 10 to 13 and 15 of the first paragraph of section 10.2.2.1, in subparagraphs 1 to 4 of the first paragraph of section 10.2.3.1 and in subparagraphs 1 to 3 and 6 to 9 of the first paragraph of section 10.2.4.1, where such windows are located in the outside walls of the processing establishment or freshwater products cannery, must be sealed and their lower edge must slope towards the inside of the room at an angle of 45º.
Doors and windows must fit well and must be watertight.