A louver (or louvre in British English) is a window blind or shutter with angled slats. It has horizontal slats angled to let in light and air but keep out rain and direct sunlight. HVAC Ventilation Louvers are made of parallel blades, slats, laths, or slips of glass, wood, or other materials. These slats regulate airflow or light penetration. People often use them in windows or doors. They let in air or light but block out sunshine or moisture.

Louvers are used in air intake or exhaust systems to keep out water. The blades of a louver do not close because they have fixed blades. If you need air shutoff, a combination damper/louver is recommended. Louvers can be functional with fixed or operable blades installed on a frame. The number, size, and design of the blades are customized. It depends on the required ventilation and protection.

Louvers come in a diverse range to fit unique applications and sizes. They include types of blades and frames of various sizes and materials. Some models even feature adjustable blades. You can find the right louver for your air control system among a wide range of products.