ClimaGuard 70 glass is part of Guardian’s effort to deliver new high-performing products that offer advanced coating solutions in anticipation of codes such as Energy Star Version 7.0 and International Energy Conservation Code 2021 that drive energy conservation in residential buildings. It has a visible light transmission of 69 percent and solar heat gain of 0.35 and its center-of-glass 0.24 U-factor aims to help homes manage solar heat in warmer months and provide thermal insulation in cooler months.