woven fiberglass filter bag 1.high covering capacity 2.good air permeability 3.bulked glass yarn woven fiberglass filter bag is a fabric made from bulked glass yarn.due to its bulky character,it has high covering capacity and good air permeability,thus providing higher filtration efficiency,lower filtration resistance and improved dust-separation efficiency up to 99.5%.it is suitable for dust separators with high velocity reverse air or low pressure drop reverse air system.its mainly used for cement and carbon black industries.