Wool Felt Sheet, Material Wool Felt, Shape Sheet, Length 12 in, Width 12 in, Thickness 1/4 in, Backing Type Adhesive, Adhesive Type Acrylic, 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, Maximum Adhesive Temperature 160 Degrees F, Minimum Adhesive Temperature -20 Degrees F, Tensile Strength 400 psi, Grade F3, Vibration Absorption High, Texture Unfinished, Standards -