RETRAC aerodynamic mirrors are engineered to promote maximum efficiency and safety for heavy-duty trucks. They feature a sleek design to reduce wind resistance and minimize drag. They are also made with an original equipment style to provide a perfect replacement for an existing OEM west coast mirror, maintaining a professional look and offering a fast and easy installation. This replacement mirror glass is designed to fit heated 8" x 19" dual-vision aerodynamic mirrors. It includes the convex glass piece only (flat glass sold separately). It is constructed with first-surface, electro-chrome glass to maximize safety by eliminating glare.