This Pella Impervia sliding patio door measures 59.25 inches wide x 79.5 inches high and comes in like-new, in-box condition with handles included and no damage or missing parts. The aluminum frame offers exceptional durability, and the tempered Low-E 366/i89 glass with argon gas fill and high-altitude glazing provides superior energy efficiency perfectly suited for Colorado's climate. Pella Impervia is known for its fiberglass-reinforced construction and resistance to warping, swelling, and rotting.