Help!!
Need to replace a fan for my condo, actually only need to replace the outside wall cap but thought I might as well replace the 30+ year old fan while I am at it. Goes from the kitchen through the wall, brick and cinder block. Seems easy enough but after getting the old vent cap off I discovered it is a 9" duct. The cap has a 10 1/2" long connector duct to get through the wall. Can only find 8" & 10" ducting. It seem that a 9" duct has disappeared from use.
Any idea of where I could find a supplier this oddball size.