This Pella Impervia sliding patio door measures 59 x 71 inches and is in like-new condition — it was previously installed but never used, and comes in its original box. The door is white aluminum with a do-vent and fixed panel configuration, annealed Low-E glass with argon gas fill, and is rated for high-altitude installation — making it ideal for the Denver metro area. Energy performance specs include a solar heat gain coefficient of 0.21 and a visible transmittance of 0.58. A screen is included. SKU: DR-ON-57695.