This Pella 150 Series high-altitude sliding window features tempered obscure glass with advanced Low-E insulating technology for energy efficiency and privacy. Dimensions: 26.5"W x 25.75"H. Unboxed in store but in like-new condition with no damage. Designed to meet high-altitude performance requirements — ideal for Denver-area homes. Model/reference: PEL-A-298-00195-00001.