Construction-Related Associations and Reference Organizations N - O

National Association of Architectural Metal Manufacturers
Established in 1938, NAAMM represents manufacturers of a wide range of metal products including: metal stairs and railings, flagpoles, expanded metal, hollow metal doors and frames, steel and aluminum bar grating, and metal lathing and furring. Visit our site to find members in your region, specifications, technical manuals and other resources for building design professionals.

NAAMM - Detention Equipment Manufacturers Division
DEMA is focused on the correctional industry construction market, representing manufacturers of products used in prisons, jails and related detention facilities. DEMA member products are found within the security envelope of these facilities. DEMA products include barriers, ceiling systems, doors and frames, furniture, glazing, hardware locks and devices, security electronics, steel cells, walls and windows.

NAAMM - Metal Bar Grating Division
Metal bar grating can be fabricated to suit any configuration for your specific application. Grating manufactured from carbon steel, aluminum, stainless steel, and special alloys provides safe, functional, durable products for all environments. Bar spacing and riveted centers variable and allow for products with open areas ranging from 50% to 90%.

National Terrazzo & Mosaic Association
The NTMA establishes national standards and provides complete specifications, color plates and technical information to building professionals. Contractor membership is available to terrazzo installers who meet rigid proficiency standards and demonstrate quality work. An NTMA member installer will bring to your jobsite the experience, knowledge and craftsmanship for which this Association is known.