... M_HV is one of the highest air volume filter, suit for turbulence airflow and steady airflow.Special designed ... flow tube. The rated air flow of VH filter ,610*610*292mm, can up to 3600m³/h ... while the face area is 2.7m/s.High efficiency, excellent media, galvanized iron frame, bigger ... (H14) under rated air flow.Low cost, VH filter with reasonable frame, more media, resistance low then ...