Designed for easy installation and superior performance in extreme weather conditions, EnergySaver thermal technology is offered throughout the complete line of CityView and Standard frame bus side and operator windows. Lighter than laminated glass applications yet strong enough to minimize breakage risk, value-priced EnergySaver windows feature 3-Minute™ Quick-Change replacement and comply with all North American and FMVSS requirements. Custom built to exact vehicle specifications, Energizer windows are available in a variety of glazing, UV and luminescence tints with optional anti-graffiti Glass Guard™ liners that can be replaced in less than 60 seconds.