Ensure that you never have unwanted pests, birds, mice, snakes or other critters getting into your dryer vents nor exhaust vents with the VentTech Louver Vent Hood Cover. <br>The VentTech 5-inch premium vent cap comes with metal screen built in. Movable louver style. High impact poly plastic. vent only - no tail. White. <br><br>Dimensions: 8" x 8" x 0.5" <br>Inner hole diameter: 4.75"