www.dhi.org - THE DOOR AND HARDWARE INSTITUTE is a professional organization that serves as the resource for education and information on doors, hardware, security and specialty products for the architectural openings industry.

www.dhinorcal.org - THE NORTHERN CALIFORNIA CHAPTER OF THE DOOR AND HARDWARE INSTITUTEThe web site for our local chapter of DHI will provide you with current members, officers and upcoming events.

www.nfpa.org - THE NATIONAL FIRE PROTECTION ASSOCIATION get updates about seminars, activities and products offered by this safety organization.

ADA - Gain access to regulations for businesses and technical assistance materials for ADA standards.

www.buildershardware.com - Builders Hardware Manufacturers Association -- BHMA -- is the leading trade association representing U.S. manufacturers of hardware for the commercial building and construction industries.