I can provide basic cfm data on a wide range of products(primarily B.F.Sturtevant) due to my ownership of a large Sturtevant trade catalog collection. Any comments about the website, company or products can be sent using the following email address:

Sturtevant Service

Large centrifugal fan service and repairs - (B.F.Sturtevant,Westinghouse and American Davidson) - Try Howden, the last owners of Sturtevant. They still do service work and have the original documentation on their products.