Three-blade aluminum fan - Scary powerful!!!

This is another find from the Lindale Mill. It is a 3 blade tube-axial fan with a cast aluminum impeller and all stainless trim. I have made a temporary setup to test-run it. This fan is mad powerful! Anybody know what manufacturer it is from? EDIT: I am building a project with this fan:    • A Fan Called Overkill - 1 - repairs and ba...