Appliance Movers is an interlocking track system that makes it easy to move appliances while protecting your floors. The mover allows for the appliances to be moved across the tracks and never the floor. There are 8 tracks per package, two of which are installed permanently under the appliance, each track is 19-7/8 inches in length and 4 inches wide. When the appliance needs to be moved for cleaning, retrieving items or servicing, the additional tracks snap together making it easy and safe for you to move your appliance. When necessary, track length can easily be extended or shortened to accomodate appliances.