Wool Felt Strip, Material Wool Felt, Shape Strip, Length 10 ft, Width 1/4 in, Thickness 1/2 in, Backing Type Plain, Durometer 20A to 30A, Wool Content 80 Percent, Density 6 lb/sq yd, Color Gray, Maximum Temperature 200 Degrees F, Minimum Temperature -80 Degrees F, Tensile Strength 250 psi, Grade F7, Vibration Absorption Medium, Standards -, Abrasion Resistance Good