This serving window features an upper glass and lower screen design. The upper glass sits at the customer's eye level, creating a clear display window when closed; the lower screen uses a fine mesh. The glass and screen use dual sliding tracks for independent control. The thickened aluminum alloy frame helps avoid rust and wear, making it suitable for ice cream carts, coffee carts, night market fixed stalls, and more. | Vevor | | Concession Window 48x36 in Aluminum Alloy Service Window, for Food Truck, Up to 85 Degrees Stand Serving with 2 Fixed | White | Best Buy