I'm installing a dryer vent in my laundry room. I already have the opening for the 4" duct through the joist and outside brick.
My problem is...In several houses I've seen, the piece of duct that goes through the wall to the outside has a nice flange (or collar) on the inside that's fastened to the joist. I have not been able to find this piece anywhere!
Home Depot and Lowes have the outside vent with a section of duct, but this seems flimsy that it's only attached to the vent and not to the joist.
Mike