Who we are Granite State Specialties, a full service construction specialties company, offers a wide variety of products such as Toilet Partitions, Toilet/Bath Accessories, Lockers, Unistrut, Metal Shelving/Bulk Storage, Wire Mesh/Security Fencing, Marker/Tack Boards, Window Treatments, and Wall Protection/Corner Guards. Installations Granite State Specialties has over 25 years of experience, ranging from installations on Wall Street in New York City, to the Federal Reserve in Boston, MA. Our reliable team can install both Union and Non-Union jobs. So whether you are in Massachusetts, Rhode Island, Connecticut, Maine, Vermont, New York or our home state of New Hampshire, the GSS Installation team is prepared to get the job done.