Product: Felt Sheets Material / grade: F13 Grade Wool Felt—Adhesive Backing Size: 12" × 12" Wool content: 75% Thickness: 1/8" Color: Gray Hardness: Durometer 20A Temperature range: -80 to 200 Compression pressure: 3 Adhesive backing: Rubber Adhesive temperature: 0 to 180 Tensile: 75