Exaust Air Blower Outlet

For exhauster with 100 mm duct diameter!
The lamellar opens due to the airflow and go to closed position only thru the gravity.
Easy but effective :-)

You need 2 countersunk head screws 3,0 x 2,5 mm to attach the assembled parts on the outlet housing and 4 screws min 3,5 x 45 to attach the complete assy on the wall.
The overall dimension of the assy is 140 x 140 x 65.