Full-length, protective glass screen provides protection against airborne viruses and bacteria for safer business transactions. It is freestanding on four casters with two locking so you can move it anywhere you need to do business. Included shelf in the passthrough window at the bottom offers a place to set checks, cards, money and documents. Shelf is easy to remove for easier cleaning. The 1/4" thick, tempered glass is clear for easy visibility. Protective screen features a stabilizing aluminum frame, rounded corners and polished edges for a professional look.