Inside the AMCA Laboratory and Certifi ed Ratings Program Through internationally recognized testing, certifi cation, and rating services, AMCA provides accurate and reliable information for the selection, application, and safe and effi cient use of air-system products. Right: AMCA wind-drivenrain (left) and waterpenetration chambers. Wind-driven-rain test. 38 Small air chamber. 2021 AMCA inmot ion Sound-testing microphone. AMCA 300 sound test. www.amca.orghttp://www.amca.org