Product Size:The size of this ventilation port is 8 x 8,which is very suitable for 7.9*7.9 ventilation port.In addition to two ventilations, there are four packs of screws, which will make the installation very simple. Includes Anti-Mosquito net:The attic vents gable vents contain removable anti-mosquito netting to prevent debris and some small animals from entering the room, giving you a comfortable environment. Louvre Design：The 45° slanted louver design allows for better air circulation and improved ventilation, providing you with a healthier life. High-Quality：This attic ventilation is made of 304 stainless steel, which is sprayed with baking paint outside. Easy to Install:Just tighten with four screws in the four small holes of the ventilation attic. Attic Vents Gable Vents vent is made of 304 stainless steel and has a built-in mosquito net to prevent small animals from entering. The vent can be disassembled for easy cleaning and installation.