Contact Us Address: Iron Workers' Local No. 25 Fringe Benefit Funds P.O. Box 99219 Troy, MI 48099-9219 (248) 347-3100 - Toll Free (800) 572-8553 Fax: (248) 813-9898 Remit Address: Iron Workers Local 25 PO Box 675210 Detroit MI 48267-5210