Brand new Pella Impervia sliding patio door in white, measuring 59"W x 82"H. Includes the full patio door unit with fixed and vent (sliding) panels, still in original shipping cradle. Tempered Low-E glass with argon fill provides excellent insulation with a U-factor of 0.24, making it Energy Star certified for year-round efficiency. The Impervia line is known for its durable fiberglass composite construction, offering superior resistance to dents, cracks, and warping compared to vinyl or aluminum alternatives. A high-performance upgrade for any home — priced at a fraction of retail.