Interstitial Velocity

Enter ACFM of Air ÷ ( Side L (in.) × Side w (in.)) - (Bag Dia.÷2)² × π × # of Bags

144 sq. in / sq. ft.     144 sq. in / sq. ft.

Then Click on Calculate To Find the Interstitial Velocity

ACFM ÷ (Side L × Side W ) -
Bag Dia.   × π × # of Bags

144 sq. in / sq. ft.     144 sq. in / sq. ft.

Interstitial Velocity = FPM