Review the terms. Length is a horizontal distance, generally considered to be the longest dimension of a 3-D object. Depth is the horizontal distance from front to back, from the front of the dresser to the back edge near the wall. Width is also a horizontal distance, measured sometimes from side to side and sometimes from front to back. Height is a vertical distance, measured from top to bottom.
Check the dimensions of the dresser you are considering. Retailers will state the dimensions using only three of the four terms given in Step 1. Only the first letter of the word will usually be used. For example, the letter H stands for height.
Determine what the terms mean. If a height measurement is given, that will be the vertical dimension of the dresser. The other two dimensions may be stated as length, width or depth. If a depth measurement is given, that will be from the front of the unit (the front face) to the back of the unit (facing the wall). The third dimension (either stated as length or width) will be the horizontal distance from one side of the piece to the other.
If, however, you are given both a length and a width dimension, then the length is the horizontal measurement from side to side, while the width is the horizonal measurement from front to back. All measurements are taken at the dresser's most prominent points.
Check your space. Now that you understand what the three numbers of your dresser dimensions mean, you are ready to check to be sure the dresser will fit your space. Using the two horizontal dimensions, check available floor space. Use the height dimension to verify that you have sufficient wall space.