The aluminum Gable Vent is suitable for various buildings, such as residential, commercial, and industrial buildings. It can be used on roofs, walls, and other locations to provide good ventilation without concern about rainwater entering the room.Specification:Material: AluminumTotal Size: 155x155mm / 6x6 inchInstallation Hole Distance: 134.6mm / 5.3 inchMounting Hole Dia: 4mm Packing Listing: 1 x Gable Vent (Screws not included)Advantage:Made of aluminum , which is sturdy and durable. It has a uniform paint coating, which makes it look beautiful. It features a slanted louver design, which effectively prevents rainwater from entering the interior and keeps it dry. The back is equipped with a mesh cover, which effectively prevents sand stone from entering.