- National Glass Association (NGA)
Providing education and information for the glass industry.
www.glass.org
- Door and Hardware Institute
Serves as the resource for information on doors, hardware, security and specialty products for the architectural openings industry.
www.dhi.org
- British Woodworking Federation
Represents manufacturers of doors, windows, and engineered timber components.
www.bwf.org.uk
- Glass and Glazing Federation
Recognised U.K. trade association for employers and companies in the flat glass industry.
www.ggf.org.uk
- Window and Door Manufacturers Association
www.nwwda.org
- Australian Window Association, Inc.
Representing manufacturers of all residential window products including timber, aluminium, uPVC, and steel.
www.awa.org.au
- National Sash & Door Jobbers Association
www.nsdja.com
- Antique Doorknob Collectors of America
Protecting, preserving, and studying the wide range of ornamental builders hardware that is a part of America's heritage.
www.antiquedoorknobs.org
- Window Wise National Certification Program
Audits and certifies contractors and window manufacturers, and conducts training seminars for installers.
www.windowise.com
- Primary Glass Manufacturers Council (PGMC)
Serves the manufacturers of primary float glass used for applications in the construction market and consumers.
www.primaryglass.org
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