Manufacturers write everything, here you can see the installation recommendations for the retractable bottle holder 300. This is necessarily a diagonal arrangement of the guides. Otherwise, there will be screw deformations. For ready-made steel bottle holders with 2 shelves, this is a total maximum load of 20kg, 10kg per shelf. A jar of cucumbers of 2 liters weighs 2.8 kg, 5 cans are placed on the shelf, and this is already beyond the recommendations, you need to be careful. The chipboard box is also prone to twisting deformations. Manufacturers allow one-way mounting of guides only for narrow boxes, 150-200 maximum. With a load of up to 15 kg. I would recommend making a middle wall so that the guides can be attached to it. A large external door with internal drawers is a normal solution if you want to get a large design solution without small facades in the kitchen. Here you need to take into account the size of the door hinges so that the drawers slide past them. Manual