1.Wool Felt Seal: 2.material:100% polyester,wool 3.weight:50-1000gsm ... 5.white,black,grey,white,gray,red,yellow Wool Felt Seal ::Specifications(1) density:0.09-0.44g/cm3 (2) ... prevent Fax, phone - vibration, electromagnetic waves to prevent, heat Microwave oven, dryer - to prevent the electromagnetic waves, heat Air conditioning - Anti ... Australian Capital Territory A...Thickness: 0.5-40 Wool Felt Seal