Inquiry (采购产品): Flakt vane axial fans I am the Chief Engineer at 345 California Center, a 50-story highrise in SF. We operate with 20 Flakt vane axial fans that are now 20 years old. I am interested in learning if there is a viable retrofit for these fans that would entail converting them to fixed-pitch propellar hubs and VFD motors. **** Hidden Message ***** Timothy Danz 345 California Center Suite 1700 San Francisco, CA 94104 USA Company: Cushman & Wakefield Title: Chief Engineer Phone: 425.434-7705 Fax: 415.434-7708 E-mail: tim@345cal.com **** Hidden Message ***** tim@345cal.com