Ventilation window is designed to improve airflow and allow fresh air into a room while keeping out dust, rain, and pests. These windows typically feature adjustable openings, such as sliding or hinged panels, that let you control the amount of air entering. Ventilation windows are ideal for spaces that need constant air circulation, like kitchens and bathrooms, to prevent moisture bu... https://thegreenfortune.com/product-categories/upvc-ventilation-window/