Inquiry (采购产品): fire rated doors Replacing existing 8 foot wide by 9 foot high gravity sliding fire door. Looking for double leaf 4' by 9', or 4 panel bi-fold 3 hour fire rated unit. **** Hidden Message ***** Verl Hostetler 828 Fifth Street So. Hopkins, MN, MN 55343 USA Company: Ibberson Engineering, Inc. E-mail: verl.hostetler@ibberson.com **** Hidden Message ***** verl.hostetler@ibberson.com