The large, tempered, tinted glass surface on this breathable RV window will let natural light enter your rig abundantly, brightening the space without compromising performance. The tempered glass provides this window with superb durability, offering great resistance to cracking, chipping, and shattering. It is ingeniously designed with a ribbed seal to form a tight barricade against moisture, insects, and even airflow. The trim secures the perimeter to keep out unwanted drafts and heat. By using lightweight aluminum, this window is sleek and aerodynamic-reducing drag which translates into better fuel efficiency.