About Ontario Windows & Doors Pro (OWDP) OWDP was established in 1999 with a focus on quality products and professional installations. Over the last 15 years, we have grown from a small, family-run shop into a leading manufacturer of durable vinyl windows. Today, OWDP is well know for thier best services & Quality near GTA area. Every window is built on a family tradition of excellence that expands over 2 generations, a point of pride that is reflected in every window and door that we build. We believe that replacing your windows should only be done once. This can only be achieved by starting with a product designed, tested and built to perform and last a lifetime. Our employees and distributors take great pride in making and selling our products.