F-7 Density and Thickness S.A.E. Specification Number F-7 A.S.T.M. Federal and Felt Association Type and Grade Number 12R3 Density Percent Specific Gravity 26.2 Actual (1) Wool Content (Min.) Percent 80 Carbon Tetrachloride Soluble (Max.) Percent 3.0 Water Soluble (Max.) Percent 4.0 Carbon Tetrachloride & Water Soluble (Max.) Percent 7.0 Ash (Max.) Percent 3.0 Tensile Strength (Min.) PSI 250 Splitting Resistance (Min.) Lbs. Per 2" Width 12 Trade Designation Extra Firm Pad Color Gray Standard Width Inches 72

THICKNESS WEIGHT Nominal (inch) Limits (inch) Nominal (lbs/sq. yd.) Limits (lbs/sq. yd.) 1/8 0.111 - 0.139 1.53 1.45 - 1.61 3/16 0.172 - 0.204 2.29 2.17 - 2.41 1/4 0.232 - 0.268 3.06 2.90 - 3.22 5/16 0.293 - 0.333 3.82 3.62 - 4.02 3/8 0.353 - 0.397 4.59 4.35 - 4.83 1/2 0.474 - 0.526 6.12 5.80 - 6.44 5/8 0.595 - 0.655 7.65 7.25 - 8.05 3/4 0.716 - 0.784 9.18 8.70 - 9.66 7/8 0.837 - 0.913 10.71 10.15 - 11.27 1 0.958 - 1.042 12.24 11.60 - 12.88