Through-wall vent for range hood
I would like to install a Broan F403004 range hood over a range that sits against an outside wall. Sales information specifies a 3 1/4" by 10" horizontal vent is provided (knock-out). I think all I need is a external wall hood (like used on a cloths dryer, but not round in this case). The information I have says nothing about any of this being included with the range hood.
Is the hardware generally available (Home Depot,say) to connect a range hood through a wall to an external hood? Again, I am assuming the hood doesn't include this hardware, if it does, then I'm "Home".