... :1*20m,2*20m FRS-40 paiting booth coarse filter media (manufacture) · Washable and reusable ·Low initial resistance ... Flexible ·Economical and practical1,Application: ≥5μm, Filter dust , (used inthe places where need washing and ... filtering),pre-filter through air filter program2,data sheet Type: supply slices or ... FRS-40 paiting booth coarse filter media (manufacture)