[Gizmo]

With the venmar system you can use some existing vents if you have them. I disconnected the 6" fresh air intake from the furnace and connected it to the fresh air in on the venmar. I then used a bathroom fan exhaust for the stale air out. The 2 8" ducts can be connected to walls or anywhere in your house. I have my stale are in sucking air out of my fish tank mechanical room and the clean air out is connected to the place where I disconnected the fresh air intake from the furnace originally. I'll take some pics to show. But basically, you can put the 2 8" ducts anywhere you like. Its just a matter of exhausting the stale air out of your house that will be the tricky one.