Inquiry (采购产品): utiolity fans do you still manufacture series 40 and 41 utility fans? If so, where can I get performance data? I need to spec 10,000 cfm at 6.0 inches SP. **** Hidden Message ***** Harry Reeder 9615 SW Allen Blvd Suite 107 Portland, OR 97005 USA Company: HCR Engr LLC E-mail: hcr10@comcast.net **** Hidden Message ***** hcr10@comcast.net