Compressed Air Filter in 15 -18,000 CFM Capacity is available with internal/ external auto drain and differential pressure indicator. The Air Filter comes in a capacity of 15 to 18,000 CFM. The Air Filter is able to remove oil at 5 to 0.003 mg / m³ rate. Compressed Air Filter in 15 -18,000 CFM Capacity is provided with high strength silicon free open cell foam for effective final stage coalescence.