The terms “louvers” and “vents” are often used interchangeably, but they actually refer to two different types of air-flow control devices. Louvers are typically used to control the amount of air entering or exiting a space, while vents are used to allow air to flow freely. Louvers are typically made of metal or plastic and feature angled slats that are arranged in a parallel pattern. These slats can be adjusted to allow more or less air to pass through, depending on the desired amount of airflow. Vents, on the other hand, are typically made of plastic or metal and feature an open design with no obstructions. They are used to allow air to move freely in and out of a space without any resistance. Louvers and vents are both important components of any HVAC system, as they help to regulate the amount of air entering and exiting a space. They are also used to improve air circulation and reduce energy costs.