The Vertical Spice language is used to describe the different combinations of 5 drawer widths and 5 base widths that make up an individual unit. The first set of numbers refers to the drawers and their widths on the unit. The second number is the number of tiers on a drawer and the last number is the depth of the unit.
Visit the How To Pages to see how to measure and select your units.
Vist the Products Page to see the dimensions of the many different units.