Discount Windows & Siding, INC (DWS) approach is to purchase windows, doors, and siding factory direct from only high-quality manufacturers. Our manufacturers use the best materials and components to produce energy efficient, innovative, and high performance home improvement products. The products we sell come with some of the strongest warranties in the business. From new construction windows and patio doors to high end fiberglass and wood windows. We offer quality products to fit any budget.