30" is the height of lower cabinet and the depth is 24" the minimum width of a cabinet can be 6" and the maximum can be 3'. The upper cabinet width can be minimum 1' and max 3'. The height is 2' and the depth is 12" to 16". The counter top height must be finished at 30".
My interview was taken by Miss. Vathsala and she enquired about my experience and checked my portfolio. I was given a test of designing a modular kitchen and later on they asked me few questions on the same design.