This Pella 150 Series single hung white vinyl window measures 43 in. wide x 59.5 in. tall and is in like-new condition, still in its original box. It includes Low-E 180/i89 double-pane annealed glass with argon gas fill and is specifically rated for high altitude use — ideal for the Denver metro area. Energy performance specs include a solar heat gain coefficient of 0.51 and visible transmittance of 0.63, offering solid insulation and natural light balance. Listing includes the window unit only. SKU: WIN-ON-57549.