Robert G Miller Incorporated open for business in Hanover in 1954! We have been serving the Hanover, Southern York County, Adams county and Carroll County homes and businesses for the last 57 Years! We feature a beautiful showroom with a large selection of Doors, Windows, Awnings, Gutters & Downspout, Seamless Gutters, Garage Doors and Siding for your home or business. We have many quality manufacturers who stand behind their product with a warranty. Our experts are experienced and we can help you decide what the best match is for your home or business. You may do it yourself or have one of our experts install it for you. Come visit us for all of your needs!