Thought I'd put up a couple links to a CFM Calculator
http://www.industrialfansdirect.com/CFM.html
And an A/C BTU Calculator
http://www.homedepot.com/webapp/wcs...false&catalogId=10053&storeId=10051&langId=-1
http://www.industrialfansdirect.com/CFM.html
And an A/C BTU Calculator
http://www.homedepot.com/webapp/wcs...false&catalogId=10053&storeId=10051&langId=-1