【High Quality】 The Enenes’ gable vent is made of durable aluminum alloy, which is rust proof, corrosion resistant,and can withstand the test of time and harsh external environments. 【Double Protection】House vent built-in with a white mesh which especially designed to allow passage of air into your home while louvers help to keep rain out and the screen behind the louvers keep birds and other insect&critters away. 【Rigid Built For External Use】 The sturdy and rigid design features noise free components that eliminates vibration and excess noise to the door vent. Can be installed in both sidewall and ceiling locations to improve air ventilation in HVAC systems. 【Size】 The vent measures 18 X 12 inch on the outside and 16 X 10 inch on the inside. 【Wide Applications】 Our gable vent exemplifies wide application as it can serve various ventilation needs around your house; Whether you need louvered vents, attic vents, shed vents, wall vents, or foundation vent covers exterior, this vent will cater to your needs. Gable Vents, 18 X12 Inch Aluminum Alloy Wall Vents Attic Vents for Houses Door Vents for Exterior Doors [Inside Dimensions: 16.2 Inch W X 10.4 Inch H ]