Highest Rated Milgard Dealer in the Nation by customer reviews and ratings. We continue to work hard for our customer's 5 star ratings for Milgard Windows & Doors. US Window & Door is one of the oldest exclusive window and door replacement companies that service throughout Southern California. We are a reliable, insured, independent business that offers a huge selection of styles, sizes and colors - both standard and custom-fitted - to uniquely fit your home. Our windows and doors are manufactured with the highest quality standards in the industry, whether it is made from wood, fiberglass, or vinyl. Our product lines include vinyl windows, vinyl doors, fiberglass windows, fiberglass doors, aluminum windows, aluminum doors, wood windows with a fiberglass exterior, and Plastpro front entry doors. We serve the entire San Diego County and South Orange County areas with a focus on Oceanside, Carlsbad, Vista, San Marcos, Escondido, Encinitas, Cardiff, Leucadia, Solana Beach, Rancho Bernardo, and Rancho Penasquitos. Our team of installation experts will ensure that your home will have decades of smooth, hassle-free operation.