Primarily designed for internal applications, our grille serves as an air return, typically placed in hallways or ceilings. It allows efficient extraction of air from the room, allowing your HVAC system to further condition it by cooling or heating. Enjoy improved indoor air quality and climate control. Please note that the designed is optimized for indoor use; if installed for outdoor applications, some ingress of water may occur. Durable Corrosion Resistant Aluminum Construction: Constructed from high-quality aluminum with a pristine white powdered coating, our grille not only excels in performance but also adds a touch of elegance to any space. Consists of a wire mesh made of galvanised steel. Secure Packaging for Peace of Mind: We understand the importance of receiving your order in perfect condition. That's why our Aluminum Return Air Grille is expertly shrink-wrapped and snugly packed in its own box. You can trust that your grille will arrive safely, free from any damage during transit. Grille Specifications: The neck size is the size of the opening that would be cut into the wall/ceiling to install the grille; the overall size is the total size of the grille as visible once installed; and the depth measures the grille's neck, excluding the thickness of the front face. Dimensions: Neck size 200 x 200 mm , Overall size 260 x 260 mm, Depth 25 mm Installation Guidance: Self tapping screws (not included) can be used to drill directly into the grille face (4 pre-drilled holes provided) or neck, depending on preference, and fix it to the surface (wall or wooden frame) as required.