What voids the lifetime warranty?
All E S Robbins chair mats have a lifetime warranty when the mat is used for the application specified. This warranty is void if metal casters are used, if furniture is placed directly on the mat, if a cleated mat is used on a hard floor surface, or the incorrect mat (i.e., too thin) is used on carpet. The warranty is also void if any party other than E S Robbins cuts the mat to a custom size.