Ventilation grilles are openings or covers that allow air to flow in and out of a space. They are commonly found in buildings, vehicles, and HVAC systems, helping to maintain air circulation and temperature control. These grilles can be adjustable or fixed, and they come in various sizes and designs to fit different applications. The primary function of ventilation grilles is to facilitate proper airflow, which is essential for maintaining indoor air quality. By allowing fresh air to enter and stale air to exit, they help prevent issues like mold growth and excessive humidity, contributing to a healthier environment for occupants.