The Vevor air conditioner wall sleeve is designed to fit standard 42" through-the-wall AC units for residential or commercial use. Made from thickened galvanized steel with an anti-corrosion coating, it helps protect the unit from dust, water, wear, and weather exposure. The exterior grille supports ventilation for effective heat dissipation during operation. Its sturdy construction and universal-fit design make it a practical and durable solution for wall-mounted air conditioner installations.