Features: The durable vents for home wall is not easy to rust. The solid fabric grille screen can effectively provide insects outside the door to provide quality ventilation and protection for your shack. In addition to the outer wall, the wall vent is also suitable for lofts, shed houses, garage doors, dryers and other spaces that need ventilation. Whether it is residential, commercial, or warehousing environment, it can meet your ventilation needs. Specifications: Material: aluminum alloy Color: brown Size: Outside dimensions: about 12" x 18" Inside dimension: about 9.5" x 15.5" Thickness: about 1.7 inches Package includes: 2 x Gable vents with 20 screws Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.