The Marvin Family of Brands website has a "Find a Dealer" feature on its website to help individuals locate local dealers that sell Marvin windows. As of 2015, the webpage suggests that Marvin windows are primarily sold by local dealers all around the United States, rather than large-scale chains.
People interested in the Marvin brands can search for a dealer in their local area. As the Marvin "Find a Dealer" site claims, "Our independent, locally owned dealers offer a level of expertise the big box stores can’t match." However, independent websites claim to be among the top sellers of Marvin windows in their area. For example, the Marvin Window and Door Store in Omaha, Nebraska claims to be the largest authorized Marvin dealer in the entire state of Nebraska. Window Classics, located in Pembroke Park, Florida, claims to be one of the leading distributors throughout Florida of premium residential window products including Marvin windows.
The Marvin Family of Brands is made up of three different brands: Marvin Windows and Doors, Integrity Windows and Doors, and Infinity Replacement Windows. Marvin claims that its Integrity and Infinity brand windows are made with a patented form of fiberglass called Ultrex that is stronger than vinyl, roll-form aluminum and various other fiberglass composites. As a result, the windows outlast and outperform other windows and require little maintenance. These windows are sold by many local dealers around the United States.