Inquiry (采购产品): Power Vent Damper I have a Heil gas furnace model NUGI075DF01. I am looking for a power vent damper part #604454 or #612878 to fit the 4" flue. **** Hidden Message ***** Jeffrey Bookman 13027 USA Company: Homeowner E-mail: jbookman1@netscape.net **** Hidden Message ***** jbookman1@netscape.net
