The SCS 8203 Dissipative ESD 3-Layer Vinyl Floor Mat Kit, Gray with Ground Cord and Snap Fasteners, 0.140 in. X 48 in. X 72 in. is a floor mat kit with a three-layer construction that meet ANSI/ESD S20.20 tested per worksurface standard ANSI/ESD S4.1 and ESD TR53. The top color layer is durable static dissipative vinyl, which has sufficiently low resistance to discharge static-laden conductors. The middle layer is a highly-conductive scrim that provides the main discharge path to ground, and the bottom layer is static-dissipative foam, providing a durable nonskid cushion. Compatible with Constant Monitors.