You can easily check your carpet depth at home using a paperclip as a measuring tool.

First, straighten one end of the paperclip.

Second, push the straightened portion of the paperclip down into the carpet until it goes through the carpet pad and reaches the subfloor.

Next, place your fingertip where the top of the carpet meets the paperclip.

Finally, pull the paperclip from the carpet while keeping your fingertip in place. Measure the distance between your fingertip and the end of the paperclip. This measurement is your carpet depth.

Match your carpet depth with the ES ROBBINS chair mat designed for a carpet pile thickness that is closest to your measurement. If you are between carpet pile depths, select the thicker carpet pile option for the best rolling performance. The thicker the carpet, the thicker the chair mat needs to be for the best ergonomic rolling experience.