Antifatigue Mat Mat Shape Rectangle Black Width 2 ft. Length 3 ft. Thickness 1/2 In. Mat Surface Pattern Marble Mat Surface Material SBR Rubber Mat Backing Material Closed Cell Vinyl Foam Edges Beveled Standards NFSI ASTM G-21 ASTM C1028-96 ASTM D3884-01 ASTM D412 ASTM D1004 ASTM D2240 ASTM E648-94A Mat Electrical Resistance Electrical Properties Not Tested Not Fire Resistant or Retardant Antimicrobial No Brake Fluid Resistant No