Whirlpool 29 to 77 Inch In-the-Wall Exhaust Air Dryer Aluminum Vent Periscope

  

The In-the-Wall Dryer Vent Periscope designed to fit between the studs inside the wall. It does a great job of carrying the exhaust air through the top plate and into attic/floor space. You should use the 4 in. Aluminum vent to complete the run to the outside.