The ASTM E1425 / AAMA 1801 test procedure is only for windows, doors and glazed wall sections. These procedures were developed by ASTM and AAMA to ensure that all acoustical fenestration products were being tested in a fully operable condition. Since air leakage has a major impact on sound transmission loss, the air leakage must be also measured and reported. The AAMA 1801 test procedure specifies the use of ASTM E1425, which requires operating force or latching force, air leakage and sound transmission loss measurements on the test specimen. ASTM E1425 specifies using ASTM E2068 for the operating force test, AAMA/WDMA/CSA 101/I.S. 2/A440 for the latching force test, ASTM E283 for the air leakage test, and ASTM E90 test method for the sound transmission loss test. The operating force test is only performed on specimens with operable sash or panels. The size of the test specimen shall be in accordance with ASTM E1425. The pass/fail requirements for the operating force and air leakage te