Style-Craft contractor series includes a double pane conservision 100 glass package which is a
high efficiency insulated glass system with a double pane clarity. It boasts a lifetime seal failure warranty with the lowest seal failure rate in the world. Along with a glass breakage warranty. The glass package has a 24 U-Factor (enter of glass only) along with a dual seal (P.T.B and Silicone) that has a stainless steel spacer edge/guard system. With thicker glass also comes more noise reduction. The Style-Craft contractor series comes with white on white color package with options to upgrade.