The Ventline vent with damper is weatherproof and and is constructed of heavy styrene. The vent features a lockable damper and comes with a 5/8″, 1/2″ or 1-3/4″ inlet flange. Vent also comes in white or colonial white colors. Rough opening is 3-3/4″ x 10-1/4″. Overall size is 11-5/8″ x 5-9/32″.