This formula asks if the flow is less than 141 CFM. If so the “Neck Radius” parameter is set equal to 3”. If that is not true it goes on to see if the flow is 266 CFM, 351 CFM, 441 CFM, and 586 CFM, each time associating an appropriate neck size based of the reported CFM.

Calculated this looks like: 7 feet of straight pipe + 20 feet for the elbow + 40 feet for the cap = 67CFM. Add that result to our total CFM (360CFM + 67CFM) to get a calculated CFM rating for your range hood of 427CFM. In order to be compliant, you would need to install a fan in the range hood that had a rating of at least 430CFM or greater.

Federal Medical Assistance Percentages or Federal Financial Participation in State Assistance Expenditures FMAP The Federal Medical Assistance Percentages (FMAPs) are used in determining the amount of Federal matching funds for State expenditures for assistance payments for certain social services, and State medical and medical insurance expenditures.

The minimum requirements say that this air should be changed 15 times an hour. This means that a fan must have the ability to move 14,400 cubic feet of air in an hour. Since there are 60 minutes in an hour, we must divide the 14,400 by 60 to get CFM (cubic feet per minute). Cubic feet of 14,400 per hour divided by 60 equals 240 CFM.

Century 5025 specs