Hz12345611

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Hi- I am new to Chief Architect. I was hoping someone can point me in the right direction. I need to draw a bathroom vanity 48 inches with one drawer 18 inches deep and one shelf below it about 7 inches off the floor. It needs to have four square legs that go from the floor to the countertop. I can figure out how to do the 18 inch tall cabinet and make it with sides but they aren't open. If I just do the cabinet with legs it doesn't have the thick legs going all the way to the countertop.