Business Description: Design Windows & Doors INC - Address: 504 S Mountain Ave Ontario, CA 91762 Tel# (909) 980-3003 For the very best in high quality replacement windows, replacement doors, and window shutters, Design Windows & Doors INC is your premier source. We offer a large selection of vinyl windows, aluminum windows, wood windows, fiberglass windows, entry doors, patio doors, french doors, utility doors, wood shutters, vinyl shutters, and more. With a showroom in Ontario, CA, we service homeowners throughout the surrounding area including Ontario, Chino, Montclair, Pomona, Laverne, Rancho Cucamonga, and more. As a family owned & operated business, we do not subcontract our work and keep all of our installers in-house. We have made it our mission to hire the best window and door installation experts and use the finest products available. Throughout our many years of service, we have helped thousands of customers add value, beauty and comfort to their home or property through attractive new windows and doors. From private homes and rental properties to businesses and multi-unit complexes, we can provide you with an unsurpassed selection of new windows, doors and installation service. As an elite dealer of several major manufacturers like Milgard, Superior, Atrium, Jeldwin, Madison, Anderson, Amerimax, Simonton, JT Windows, Magic, and more, we can provide our customers with the very best selection of windows and doors on the market. In addition, we proudly offer a beautiful selection of custom window shutters by Sunland. Design Windows & Doors INC is A+ rated with the Better Business Bureau and a member of the California League of Homeowners. Our lead installers are AAMA and RRP Certified. We would love to work with you on your next window and door installation project. Contact a member of our knowledgeable staff for more information on our services and to get started with your project today! Call us at (909) 980-3003 for a free consultation!