Wool Felt Strip, Material Wool Felt, Shape Strip, Length 10 ft, Width 2 in, Thickness 1/4 in, Backing Type Plain, Durometer 30A to 40A, Wool Content 85 Percent, Density 4 lb/sq yd, Color Gray, Maximum Temperature 200 Degrees F, Minimum Temperature -80 Degrees F, Tensile Strength 400 psi, Grade F3, Vibration Absorption High, Standards -, Abrasion Resistance Excellent