T-155N is a nickel plated glide that elevates the bottom of a trunk approximately 1/2" above the floow. Overall measurements are 1/2" high by 2" wide by 1 3/8" long. If you are looking to have the glides "disappear" under your trunk, try setting them back from the edge. Just make sure that they are no mounted so far back that the trunk becomes unstable. The glides low profile makes them easy to conceal.