... temperature and humidity. Dust Air Filter Bag DescriptionThe filter bag adopt composite nonwoven cloth as filter material. The metal frame is ... normal humidity.MaterialIt adopts synthetic fibre as the material.Filter Bag ApplicationIt is mainly used for air purification in ... mechanical, petrochemical and light industry.Technical DataFilter Grade: G1, G2, G3, G4, F5, F6, F7, F8, F9, H10, H11Filter ...