natural Ground protection mats 6’X3′ for swamp ground-High 0.495°/MIN on 3/4" thick mat (UL 94 Standard, Horizontal Burning Test for Classifying Material 94HB) CRITICAL RADIANT FLUX: 0.11 watts/sq. cm. (ASTM E648-94a) ELECTRICAL RESISTANCE: 1.6 x 10e9 megoh average (ASTM D991) 5.6 x 10e8 megoh average (ASTM D991) ELECTROSTATIC PROPENSITY-0