43 inch ironing board cover_wooden ironing board cover

Low-E glass is coated with a thin layer of metal or metallic oxide that reflects infrared radiation, allowing the glass to achieve a lower emissivity rating. Emissivity refers to a material's ability to emit energy as thermal radiation; a lower emissivity rating means less heat is lost through the glass. Low-E coatings are typically applied to one side of the glass and can vary in composition depending on the desired energy performance.