The Vevor 48"x36" concession serving window features a durable 1.2mm aluminum alloy frame, stainless steel mesh screens, and a powder-coated finish for long-lasting use in food trucks, stands, and trailers. Four 0.5mm mesh screens protect food from debris, while double sliding tracks and two key locks provide flexible operation and security. The 85° hydraulic-assisted opening offers a wide serving view, and the included awning shields against sun and rain. An upgraded slot design allows for easy glass customization, making it both functional and visually appealing for mobile food service. (Recommend reserving an additional 5mm for installation.)