Because there are no metals used in the construction of Super Spacer window spacers, conductivity is eliminated. This means that the insulating properties of the window are maximized, keeping the temperature of your window edges consistently warmer (up to 10.2 degrees warmer). While many other window manufactures claim to provide this “warm edge technology”, they often feature highly conductive metal-based glass spacers. Windows that include metal-based spacers can lose up to 50% of the overall R-value, allowing hot and cold to freely flow through the window seals. With Super Spacer, however, the R-value a window is better maintained.