Marvin Design Gallery by NSWS features Marvin window and door products. Our convenient new showroom in Middleton, Massachusetts allows architects, builders and homeowners to view full size displays, in real home-like settings, to help you visualize how Marvin products will complement every new home or improvement project. Our highly skilled, knowledgeable team of Marvin Window and Door professionals will help you select the right product for your project. Experience the difference at Marvin Design Gallery by NSWS where we have been dedicated to meeting New England's door and window needs for over 10 years.