... filter, primary filter, washable filter, MERV filter, RELAB filter, EU2 filter, paper filterFeatures:Capturing 5 micron or above 5 micron particles, High airflow, Low resistance, Large dust ... holding capacity, Long operationg life.Specifications:Filter Efficiency: G3(EN779) ... .high efficiency filter supplier.Description of product:WD-LT series mine dust filter cylinder is ...