I don’t know what you mean by "LHS", and unless you rotated the piece, comparing X and depth isn’t correct. With a rotation of 0°, the width of a piece is measured along X axis, and its depth along Y axis.

in my example that i cannot upload […]

Click on the Image button found in post preview page and give the URL you want to show. The only difficulty is to find a server where to host this image. This forum doesn’t allow better.