Effective Temperature and Humidity Control If your container is also damp due to condensation buildup in the winter and overheating in the summer, Causing your cargo to melt. This container louvered modification gable vent is a good choice. Preventing Overheating in Summer Protect your cargo and extend the service life of your container Preventing Condensation in Winter Let your sea cans, container homes, cabins, and offices no longer be troubled by 'container rain' Wide Applications These large vents were just what you needed for your 20ft container to allow better air flowBeing in the desert southwest, These vents can reduce the heat build up inside 40' container Metal Vents The lower opening design can prevent rain from entering14 in x 9 in big size to allow better air flow, Helps take the intense heat out of your container Integrated Metal Screen Compared with other vents, The alloy steel mesh we use is stronger than other plastic meshes, Not easy to damage and easy to cleanNo cover on the back easy to clean Powder Coating With powder coating, It will not rust after long-term use, No need to worry about bad weather and it will also ensure durability after being exposed to the sun for several years Kind Tips In the southern region where the temperature and humidity are high, It is recommended to install four vents per containerIn the northern or northwest regions, It is recommended to install two vents to control the temperature and humidity Note: Once the installation is complete it is recommended that you add a layer of sealant around the entire frame (inside and outside) to ensure a weatherproof installation