rain barrel screen: 6 inch aluminum installs in minutes - keep mosquitos and debris out of your rain barrel - rain barrel diverter kit - rainwater collection system - rain barrels - rain barrel kit earthminded the perfect rain barrel screen that will allow easy flow of water into your rain barrel while blocking debris and insects from getting in. your rain barrel will run smoother and stay cleaner with the installation of one of our round rain barrel louver vents. our rain barrel vents come in several different sizes to make sure they fit your rain barrel setup. made out of aluminum, our screened rain barrel vents will be durable and withstand the bad weather your rain barrel may be exposed to. these rain barrel vents are designed to reduce the open area that water can evaporate from while still allowing water to flow in easily in order fill up your rain barrel from your downspout. the fine mesh has an easy time keeping debris from entering your barrel and prevents mosquitoes from laying eggs and hatching in the water. these are a must have for any rain barrel setup.