"Molly Brown" wrote

Is your vent hole opening to the outside higher than where it connects
to the dryer? Ideally it should be either lower or at least the same
height to keep lint from being trapped in the duct

I've never seen one that was not higher. How do you make it the same or
lower if the dryer is in a basement or on a slab and the outlet is 4" above
slab?