Larson Performance 35.875-in x 63-in Low-E Aluminum Brown Window | L20143663ES

Low-E glass keeps your home warmer in the winter, cooler in the summer, and reduces harmful UV rays that cause fading. Meets ENERGY STAR certification requirements in northern and north-central climate zones. Adding an insulating layer reduces drafts up to 40% by mounting over existing window to create a thermal barrier. Weatherstrip blocks drafts and reduces air infiltration for a more comfortable and energy-efficient home. Bottom expander adjusts for a tight fit. Half screen included for easy ventilation. Glass and screen are removable for easy cleaning. The Attachment Energy Rating Council certifies this product’s energy performance and rates as 69 out of a possible 110 in a dominantly cool climate and 24 out of a possible 55 in a dominantly warm climate.