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CFM Airflow Calculator

Calculate CFM airflow from room volume and ACH targets.

ft
ft
ft

CFM (Min, 4 ACH)

180.0 CFM

CFM (Max, 8 ACH)

360.0 CFM

Room Volume

2,700 ft³

Length × Width × Height

20 × 15 × 9 ft

Note

ACH = air changes per hour