Low-E (Low-Emissivity) glass is designed with a thin metallic layer for enhancing energy efficiency. This special coating allows short-wave solar energy to penetrate while reflecting long-wave infrared energy, thereby conserving indoor heat during cold winter months. It’s a perfect fit for colder climates such as Canada, where we aim to keep the warmth indoors. If you’d like to learn more, check out our article here: https://www.windowscanada.com/whitepages/what-are-low-e-coatings.html