The American Fence Association is the largest organization representing the fence, gate, and perimeter security industry in the United States. AFA - Setting the Standard of Excellence for the Fence Industry. TO BENEFIT THE FENCE, DECK AND RAILING INDUSTRY, AS WELL AS THE CONSUMER, BY PROMOTING THE HIGHEST LEVELS OF PROFESSIONALISM, ETHICS AND PRODUCT STANDARDS BY DISSEMINATING INFORMATION AND EDUCATING ITS MEMBERS.