Always check that the slider mechanism is working properly. A piece of advice, sliding doors are more fancy but can be a headache if they don't work well.
Let's look at shelving since it is the one used most frequently. Shelving can be found in two main forms: 1) site-built and 2) prefabricated.
Not all shelving is meant to be designed as corner shelving. It would be impractical for a book case to be made in the corner shelving design, because there would be valuable shelf space that could not be used to store books because of the angle of the back side of the shelves. A china cabinet or hutch would pose the same design problem.
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